Home / 18,921.68-28,397.66-8,534.24

Finding the Fourth Proportional to 18,921.68, 28,397.66 and 8,534.24

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Solution

The fourth proportional to 18,921.68, 28,397.66 and 8,534.24 is: 12,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.68 : 28,397.66 = 8,534.24 : x
  2. Step 2: Convert to fraction form
    18,921.68/28,397.66 = 8,534.24/x
  3. Step 3: Cross multiply
    18,921.68x = 28,397.66 × 8,534.24
  4. Step 4: Simplify right side
    18,921.68x = 242,352,445.88
  5. Step 5: Solve for x
    x = 242,352,445.88/18,921.68
  6. Step 6: Final answer
    x = 12,808.19

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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.