Home / 25,538.86-38,306.70-12,221.31

Finding the Fourth Proportional to 25,538.86, 38,306.70 and 12,221.31

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Solution

The fourth proportional to 25,538.86, 38,306.70 and 12,221.31 is: 18,331.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,538.86 : 38,306.70 = 12,221.31 : x
  2. Step 2: Convert to fraction form
    25,538.86/38,306.70 = 12,221.31/x
  3. Step 3: Cross multiply
    25,538.86x = 38,306.70 × 12,221.31
  4. Step 4: Simplify right side
    25,538.86x = 468,158,199.43
  5. Step 5: Solve for x
    x = 468,158,199.43/25,538.86
  6. Step 6: Final answer
    x = 18,331.21

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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.