Home / 42,173.17-63,269.30-12,589.90

Finding the Fourth Proportional to 42,173.17, 63,269.30 and 12,589.90

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Solution

The fourth proportional to 42,173.17, 63,269.30 and 12,589.90 is: 18,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,173.17 : 63,269.30 = 12,589.90 : x
  2. Step 2: Convert to fraction form
    42,173.17/63,269.30 = 12,589.90/x
  3. Step 3: Cross multiply
    42,173.17x = 63,269.30 × 12,589.90
  4. Step 4: Simplify right side
    42,173.17x = 796,554,160.07
  5. Step 5: Solve for x
    x = 796,554,160.07/42,173.17
  6. Step 6: Final answer
    x = 18,887.70

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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.