Home / 21,449.70-32,138.98-15,178.62

Finding the Fourth Proportional to 21,449.70, 32,138.98 and 15,178.62

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Solution

The fourth proportional to 21,449.70, 32,138.98 and 15,178.62 is: 22,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.70 : 32,138.98 = 15,178.62 : x
  2. Step 2: Convert to fraction form
    21,449.70/32,138.98 = 15,178.62/x
  3. Step 3: Cross multiply
    21,449.70x = 32,138.98 × 15,178.62
  4. Step 4: Simplify right side
    21,449.70x = 487,825,364.61
  5. Step 5: Solve for x
    x = 487,825,364.61/21,449.70
  6. Step 6: Final answer
    x = 22,742.76

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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.