Home / 15,432.75-21,297.20-8,359.18

Finding the Fourth Proportional to 15,432.75, 21,297.20 and 8,359.18

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Solution

The fourth proportional to 15,432.75, 21,297.20 and 8,359.18 is: 11,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.75 : 21,297.20 = 8,359.18 : x
  2. Step 2: Convert to fraction form
    15,432.75/21,297.20 = 8,359.18/x
  3. Step 3: Cross multiply
    15,432.75x = 21,297.20 × 8,359.18
  4. Step 4: Simplify right side
    15,432.75x = 178,027,033.26
  5. Step 5: Solve for x
    x = 178,027,033.26/15,432.75
  6. Step 6: Final answer
    x = 11,535.66

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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.