Home / 42,605.40-63,908.10-11,443.80

Finding the Fourth Proportional to 42,605.40, 63,908.10 and 11,443.80

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Solution

The fourth proportional to 42,605.40, 63,908.10 and 11,443.80 is: 17,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,605.40 : 63,908.10 = 11,443.80 : x
  2. Step 2: Convert to fraction form
    42,605.40/63,908.10 = 11,443.80/x
  3. Step 3: Cross multiply
    42,605.40x = 63,908.10 × 11,443.80
  4. Step 4: Simplify right side
    42,605.40x = 731,351,514.78
  5. Step 5: Solve for x
    x = 731,351,514.78/42,605.40
  6. Step 6: Final answer
    x = 17,165.70

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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.