Home / 42,128.92-63,192.70-12,546.92

Finding the Fourth Proportional to 42,128.92, 63,192.70 and 12,546.92

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Solution

The fourth proportional to 42,128.92, 63,192.70 and 12,546.92 is: 18,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,128.92 : 63,192.70 = 12,546.92 : x
  2. Step 2: Convert to fraction form
    42,128.92/63,192.70 = 12,546.92/x
  3. Step 3: Cross multiply
    42,128.92x = 63,192.70 × 12,546.92
  4. Step 4: Simplify right side
    42,128.92x = 792,873,751.48
  5. Step 5: Solve for x
    x = 792,873,751.48/42,128.92
  6. Step 6: Final answer
    x = 18,820.18

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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.