Home / 15,432.16-21,296.20-8,358.48

Finding the Fourth Proportional to 15,432.16, 21,296.20 and 8,358.48

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Solution

The fourth proportional to 15,432.16, 21,296.20 and 8,358.48 is: 11,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.16 : 21,296.20 = 8,358.48 : x
  2. Step 2: Convert to fraction form
    15,432.16/21,296.20 = 8,358.48/x
  3. Step 3: Cross multiply
    15,432.16x = 21,296.20 × 8,358.48
  4. Step 4: Simplify right side
    15,432.16x = 178,003,861.78
  5. Step 5: Solve for x
    x = 178,003,861.78/15,432.16
  6. Step 6: Final answer
    x = 11,534.60

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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.