Home / 15,613.29-21,546.85-8,539.71

Finding the Fourth Proportional to 15,613.29, 21,546.85 and 8,539.71

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Solution

The fourth proportional to 15,613.29, 21,546.85 and 8,539.71 is: 11,785.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.29 : 21,546.85 = 8,539.71 : x
  2. Step 2: Convert to fraction form
    15,613.29/21,546.85 = 8,539.71/x
  3. Step 3: Cross multiply
    15,613.29x = 21,546.85 × 8,539.71
  4. Step 4: Simplify right side
    15,613.29x = 184,003,721.33
  5. Step 5: Solve for x
    x = 184,003,721.33/15,613.29
  6. Step 6: Final answer
    x = 11,785.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.