Home / 31,988.64-47,949.60-10,921.68

Finding the Fourth Proportional to 31,988.64, 47,949.60 and 10,921.68

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Solution

The fourth proportional to 31,988.64, 47,949.60 and 10,921.68 is: 16,371.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.64 : 47,949.60 = 10,921.68 : x
  2. Step 2: Convert to fraction form
    31,988.64/47,949.60 = 10,921.68/x
  3. Step 3: Cross multiply
    31,988.64x = 47,949.60 × 10,921.68
  4. Step 4: Simplify right side
    31,988.64x = 523,690,187.33
  5. Step 5: Solve for x
    x = 523,690,187.33/31,988.64
  6. Step 6: Final answer
    x = 16,371.13

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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.