Home / 20,929.55-31,395.24-10,404.62

Finding the Fourth Proportional to 20,929.55, 31,395.24 and 10,404.62

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Solution

The fourth proportional to 20,929.55, 31,395.24 and 10,404.62 is: 15,607.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.55 : 31,395.24 = 10,404.62 : x
  2. Step 2: Convert to fraction form
    20,929.55/31,395.24 = 10,404.62/x
  3. Step 3: Cross multiply
    20,929.55x = 31,395.24 × 10,404.62
  4. Step 4: Simplify right side
    20,929.55x = 326,655,333.01
  5. Step 5: Solve for x
    x = 326,655,333.01/20,929.55
  6. Step 6: Final answer
    x = 15,607.37

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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.