Home / 31,989.28-47,941.68-15,354.40

Finding the Fourth Proportional to 31,989.28, 47,941.68 and 15,354.40

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Solution

The fourth proportional to 31,989.28, 47,941.68 and 15,354.40 is: 23,011.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.28 : 47,941.68 = 15,354.40 : x
  2. Step 2: Convert to fraction form
    31,989.28/47,941.68 = 15,354.40/x
  3. Step 3: Cross multiply
    31,989.28x = 47,941.68 × 15,354.40
  4. Step 4: Simplify right side
    31,989.28x = 736,115,731.39
  5. Step 5: Solve for x
    x = 736,115,731.39/31,989.28
  6. Step 6: Final answer
    x = 23,011.33

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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.