Home / 15,331.68-21,153.96-8,615.97

Finding the Fourth Proportional to 15,331.68, 21,153.96 and 8,615.97

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Solution

The fourth proportional to 15,331.68, 21,153.96 and 8,615.97 is: 11,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.68 : 21,153.96 = 8,615.97 : x
  2. Step 2: Convert to fraction form
    15,331.68/21,153.96 = 8,615.97/x
  3. Step 3: Cross multiply
    15,331.68x = 21,153.96 × 8,615.97
  4. Step 4: Simplify right side
    15,331.68x = 182,261,884.74
  5. Step 5: Solve for x
    x = 182,261,884.74/15,331.68
  6. Step 6: Final answer
    x = 11,887.93

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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.