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Finding the Fourth Proportional to 20,454, 30,688.20 and 10,073.04

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Solution

The fourth proportional to 20,454, 30,688.20 and 10,073.04 is: 15,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454 : 30,688.20 = 10,073.04 : x
  2. Step 2: Convert to fraction form
    20,454/30,688.20 = 10,073.04/x
  3. Step 3: Cross multiply
    20,454x = 30,688.20 × 10,073.04
  4. Step 4: Simplify right side
    20,454x = 309,123,466.13
  5. Step 5: Solve for x
    x = 309,123,466.13/20,454
  6. Step 6: Final answer
    x = 15,113.11

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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.