Home / 42,381.12-63,546.96-12,790.08

Finding the Fourth Proportional to 42,381.12, 63,546.96 and 12,790.08

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Solution

The fourth proportional to 42,381.12, 63,546.96 and 12,790.08 is: 19,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,381.12 : 63,546.96 = 12,790.08 : x
  2. Step 2: Convert to fraction form
    42,381.12/63,546.96 = 12,790.08/x
  3. Step 3: Cross multiply
    42,381.12x = 63,546.96 × 12,790.08
  4. Step 4: Simplify right side
    42,381.12x = 812,770,702.16
  5. Step 5: Solve for x
    x = 812,770,702.16/42,381.12
  6. Step 6: Final answer
    x = 19,177.66

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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.