Home / 25,487.40-38,172.89-12,169.76

Finding the Fourth Proportional to 25,487.40, 38,172.89 and 12,169.76

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Solution

The fourth proportional to 25,487.40, 38,172.89 and 12,169.76 is: 18,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,487.40 : 38,172.89 = 12,169.76 : x
  2. Step 2: Convert to fraction form
    25,487.40/38,172.89 = 12,169.76/x
  3. Step 3: Cross multiply
    25,487.40x = 38,172.89 × 12,169.76
  4. Step 4: Simplify right side
    25,487.40x = 464,554,909.81
  5. Step 5: Solve for x
    x = 464,554,909.81/25,487.40
  6. Step 6: Final answer
    x = 18,226.85

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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.