Home / 42,512.52-63,771.26-12,931.40

Finding the Fourth Proportional to 42,512.52, 63,771.26 and 12,931.40

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Solution

The fourth proportional to 42,512.52, 63,771.26 and 12,931.40 is: 19,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,512.52 : 63,771.26 = 12,931.40 : x
  2. Step 2: Convert to fraction form
    42,512.52/63,771.26 = 12,931.40/x
  3. Step 3: Cross multiply
    42,512.52x = 63,771.26 × 12,931.40
  4. Step 4: Simplify right side
    42,512.52x = 824,651,671.56
  5. Step 5: Solve for x
    x = 824,651,671.56/42,512.52
  6. Step 6: Final answer
    x = 19,397.85

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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.