Home / 25,909.80-38,864.70-11,147.55

Finding the Fourth Proportional to 25,909.80, 38,864.70 and 11,147.55

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Solution

The fourth proportional to 25,909.80, 38,864.70 and 11,147.55 is: 16,721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,909.80 : 38,864.70 = 11,147.55 : x
  2. Step 2: Convert to fraction form
    25,909.80/38,864.70 = 11,147.55/x
  3. Step 3: Cross multiply
    25,909.80x = 38,864.70 × 11,147.55
  4. Step 4: Simplify right side
    25,909.80x = 433,246,186.49
  5. Step 5: Solve for x
    x = 433,246,186.49/25,909.80
  6. Step 6: Final answer
    x = 16,721.33

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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.