Home / 13,613.08-20,428.32-8,686.24

Finding the Fourth Proportional to 13,613.08, 20,428.32 and 8,686.24

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Solution

The fourth proportional to 13,613.08, 20,428.32 and 8,686.24 is: 13,034.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.08 : 20,428.32 = 8,686.24 : x
  2. Step 2: Convert to fraction form
    13,613.08/20,428.32 = 8,686.24/x
  3. Step 3: Cross multiply
    13,613.08x = 20,428.32 × 8,686.24
  4. Step 4: Simplify right side
    13,613.08x = 177,445,290.32
  5. Step 5: Solve for x
    x = 177,445,290.32/13,613.08
  6. Step 6: Final answer
    x = 13,034.91

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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.