Home / 18,834.60-28,279.80-10,531.20

Finding the Fourth Proportional to 18,834.60, 28,279.80 and 10,531.20

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Solution

The fourth proportional to 18,834.60, 28,279.80 and 10,531.20 is: 15,812.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.60 : 28,279.80 = 10,531.20 : x
  2. Step 2: Convert to fraction form
    18,834.60/28,279.80 = 10,531.20/x
  3. Step 3: Cross multiply
    18,834.60x = 28,279.80 × 10,531.20
  4. Step 4: Simplify right side
    18,834.60x = 297,820,229.76
  5. Step 5: Solve for x
    x = 297,820,229.76/18,834.60
  6. Step 6: Final answer
    x = 15,812.40

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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.