Home / 15,753.48-21,739.92-8,680.14

Finding the Fourth Proportional to 15,753.48, 21,739.92 and 8,680.14

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Solution

The fourth proportional to 15,753.48, 21,739.92 and 8,680.14 is: 11,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,753.48 : 21,739.92 = 8,680.14 : x
  2. Step 2: Convert to fraction form
    15,753.48/21,739.92 = 8,680.14/x
  3. Step 3: Cross multiply
    15,753.48x = 21,739.92 × 8,680.14
  4. Step 4: Simplify right side
    15,753.48x = 188,705,549.19
  5. Step 5: Solve for x
    x = 188,705,549.19/15,753.48
  6. Step 6: Final answer
    x = 11,978.66

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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.