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Finding the Fourth Proportional to 17,721.16, 26,610.90 and 15,548.20

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Solution

The fourth proportional to 17,721.16, 26,610.90 and 15,548.20 is: 23,347.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,721.16 : 26,610.90 = 15,548.20 : x
  2. Step 2: Convert to fraction form
    17,721.16/26,610.90 = 15,548.20/x
  3. Step 3: Cross multiply
    17,721.16x = 26,610.90 × 15,548.20
  4. Step 4: Simplify right side
    17,721.16x = 413,751,595.38
  5. Step 5: Solve for x
    x = 413,751,595.38/17,721.16
  6. Step 6: Final answer
    x = 23,347.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.