Home / 42,153.40-63,234.35-13,689.16

Finding the Fourth Proportional to 42,153.40, 63,234.35 and 13,689.16

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Solution

The fourth proportional to 42,153.40, 63,234.35 and 13,689.16 is: 20,535.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,153.40 : 63,234.35 = 13,689.16 : x
  2. Step 2: Convert to fraction form
    42,153.40/63,234.35 = 13,689.16/x
  3. Step 3: Cross multiply
    42,153.40x = 63,234.35 × 13,689.16
  4. Step 4: Simplify right side
    42,153.40x = 865,625,134.65
  5. Step 5: Solve for x
    x = 865,625,134.65/42,153.40
  6. Step 6: Final answer
    x = 20,535.12

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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.