Home / 31,124.28-42,951.54-16,977.36

Finding the Fourth Proportional to 31,124.28, 42,951.54 and 16,977.36

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Solution

The fourth proportional to 31,124.28, 42,951.54 and 16,977.36 is: 23,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,124.28 : 42,951.54 = 16,977.36 : x
  2. Step 2: Convert to fraction form
    31,124.28/42,951.54 = 16,977.36/x
  3. Step 3: Cross multiply
    31,124.28x = 42,951.54 × 16,977.36
  4. Step 4: Simplify right side
    31,124.28x = 729,203,757.13
  5. Step 5: Solve for x
    x = 729,203,757.13/31,124.28
  6. Step 6: Final answer
    x = 23,428.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.