Home / 15,826.41-21,839.56-8,654.90

Finding the Fourth Proportional to 15,826.41, 21,839.56 and 8,654.90

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Solution

The fourth proportional to 15,826.41, 21,839.56 and 8,654.90 is: 11,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,826.41 : 21,839.56 = 8,654.90 : x
  2. Step 2: Convert to fraction form
    15,826.41/21,839.56 = 8,654.90/x
  3. Step 3: Cross multiply
    15,826.41x = 21,839.56 × 8,654.90
  4. Step 4: Simplify right side
    15,826.41x = 189,019,158.91
  5. Step 5: Solve for x
    x = 189,019,158.91/15,826.41
  6. Step 6: Final answer
    x = 11,943.27

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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.