Home / 42,123.92-63,185.92-12,542.16

Finding the Fourth Proportional to 42,123.92, 63,185.92 and 12,542.16

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Solution

The fourth proportional to 42,123.92, 63,185.92 and 12,542.16 is: 18,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,123.92 : 63,185.92 = 12,542.16 : x
  2. Step 2: Convert to fraction form
    42,123.92/63,185.92 = 12,542.16/x
  3. Step 3: Cross multiply
    42,123.92x = 63,185.92 × 12,542.16
  4. Step 4: Simplify right side
    42,123.92x = 792,487,918.39
  5. Step 5: Solve for x
    x = 792,487,918.39/42,123.92
  6. Step 6: Final answer
    x = 18,813.25

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1.5x scale

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.