Home / 20,101,821.87-30,076,641.78-11,908,861.38

Finding the Fourth Proportional to 20,101,821.87, 30,076,641.78 and 11,908,861.38

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Solution

The fourth proportional to 20,101,821.87, 30,076,641.78 and 11,908,861.38 is: 17,818,213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101,821.87 : 30,076,641.78 = 11,908,861.38 : x
  2. Step 2: Convert to fraction form
    20,101,821.87/30,076,641.78 = 11,908,861.38/x
  3. Step 3: Cross multiply
    20,101,821.87x = 30,076,641.78 × 11,908,861.38
  4. Step 4: Simplify right side
    20,101,821.87x = 358,178,557,756,253.69
  5. Step 5: Solve for x
    x = 358,178,557,756,253.69/20,101,821.87
  6. Step 6: Final answer
    x = 17,818,213.69

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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.