Home / 18,722.50-28,105.35-9,507.94

Finding the Fourth Proportional to 18,722.50, 28,105.35 and 9,507.94

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Solution

The fourth proportional to 18,722.50, 28,105.35 and 9,507.94 is: 14,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.50 : 28,105.35 = 9,507.94 : x
  2. Step 2: Convert to fraction form
    18,722.50/28,105.35 = 9,507.94/x
  3. Step 3: Cross multiply
    18,722.50x = 28,105.35 × 9,507.94
  4. Step 4: Simplify right side
    18,722.50x = 267,223,981.48
  5. Step 5: Solve for x
    x = 267,223,981.48/18,722.50
  6. Step 6: Final answer
    x = 14,272.88

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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.