Home / 15,449.86-21,319.23-9,481.78

Finding the Fourth Proportional to 15,449.86, 21,319.23 and 9,481.78

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Solution

The fourth proportional to 15,449.86, 21,319.23 and 9,481.78 is: 13,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.86 : 21,319.23 = 9,481.78 : x
  2. Step 2: Convert to fraction form
    15,449.86/21,319.23 = 9,481.78/x
  3. Step 3: Cross multiply
    15,449.86x = 21,319.23 × 9,481.78
  4. Step 4: Simplify right side
    15,449.86x = 202,144,248.63
  5. Step 5: Solve for x
    x = 202,144,248.63/15,449.86
  6. Step 6: Final answer
    x = 13,083.89

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Double scale
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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.