Home / 20,921,148.10-31,381,722.15-7,453,116.10

Finding the Fourth Proportional to 20,921,148.10, 31,381,722.15 and 7,453,116.10

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Solution

The fourth proportional to 20,921,148.10, 31,381,722.15 and 7,453,116.10 is: 11,179,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,921,148.10 : 31,381,722.15 = 7,453,116.10 : x
  2. Step 2: Convert to fraction form
    20,921,148.10/31,381,722.15 = 7,453,116.10/x
  3. Step 3: Cross multiply
    20,921,148.10x = 31,381,722.15 × 7,453,116.10
  4. Step 4: Simplify right side
    20,921,148.10x = 233,891,618,601,891.59
  5. Step 5: Solve for x
    x = 233,891,618,601,891.59/20,921,148.10
  6. Step 6: Final answer
    x = 11,179,674.15

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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.