Home / 15,521.60-21,421.60-9,233.92

Finding the Fourth Proportional to 15,521.60, 21,421.60 and 9,233.92

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Solution

The fourth proportional to 15,521.60, 21,421.60 and 9,233.92 is: 12,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.60 : 21,421.60 = 9,233.92 : x
  2. Step 2: Convert to fraction form
    15,521.60/21,421.60 = 9,233.92/x
  3. Step 3: Cross multiply
    15,521.60x = 21,421.60 × 9,233.92
  4. Step 4: Simplify right side
    15,521.60x = 197,805,340.67
  5. Step 5: Solve for x
    x = 197,805,340.67/15,521.60
  6. Step 6: Final answer
    x = 12,743.88

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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.