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Finding the Fourth Proportional to 15,652.88, 21,600.98 and 8,579.46

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Solution

The fourth proportional to 15,652.88, 21,600.98 and 8,579.46 is: 11,839.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,652.88 : 21,600.98 = 8,579.46 : x
  2. Step 2: Convert to fraction form
    15,652.88/21,600.98 = 8,579.46/x
  3. Step 3: Cross multiply
    15,652.88x = 21,600.98 × 8,579.46
  4. Step 4: Simplify right side
    15,652.88x = 185,324,700.97
  5. Step 5: Solve for x
    x = 185,324,700.97/15,652.88
  6. Step 6: Final answer
    x = 11,839.66

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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.