Home / 15,899.28-21,941.34-8,729.48

Finding the Fourth Proportional to 15,899.28, 21,941.34 and 8,729.48

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Solution

The fourth proportional to 15,899.28, 21,941.34 and 8,729.48 is: 12,046.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.28 : 21,941.34 = 8,729.48 : x
  2. Step 2: Convert to fraction form
    15,899.28/21,941.34 = 8,729.48/x
  3. Step 3: Cross multiply
    15,899.28x = 21,941.34 × 8,729.48
  4. Step 4: Simplify right side
    15,899.28x = 191,536,543.56
  5. Step 5: Solve for x
    x = 191,536,543.56/15,899.28
  6. Step 6: Final answer
    x = 12,046.87

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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.