Home / 20,179,381,509.70-30,269,072,264.55-8,384,579,955.70

Finding the Fourth Proportional to 20,179,381,509.70, 30,269,072,264.55 and 8,384,579,955.70

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Solution

The fourth proportional to 20,179,381,509.70, 30,269,072,264.55 and 8,384,579,955.70 is: 12,576,869,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179,381,509.70 : 30,269,072,264.55 = 8,384,579,955.70 : x
  2. Step 2: Convert to fraction form
    20,179,381,509.70/30,269,072,264.55 = 8,384,579,955.70/x
  3. Step 3: Cross multiply
    20,179,381,509.70x = 30,269,072,264.55 × 8,384,579,955.70
  4. Step 4: Simplify right side
    20,179,381,509.70x = 253,793,456,586,980,720,640
  5. Step 5: Solve for x
    x = 253,793,456,586,980,720,640/20,179,381,509.70
  6. Step 6: Final answer
    x = 12,576,869,933.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.