Home / 42,456.08-63,587-20,285.04

Finding the Fourth Proportional to 42,456.08, 63,587 and 20,285.04

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Solution

The fourth proportional to 42,456.08, 63,587 and 20,285.04 is: 30,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,456.08 : 63,587 = 20,285.04 : x
  2. Step 2: Convert to fraction form
    42,456.08/63,587 = 20,285.04/x
  3. Step 3: Cross multiply
    42,456.08x = 63,587 × 20,285.04
  4. Step 4: Simplify right side
    42,456.08x = 1,289,864,838.48
  5. Step 5: Solve for x
    x = 1,289,864,838.48/42,456.08
  6. Step 6: Final answer
    x = 30,381.16

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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.