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Finding the Fourth Proportional to 17,538.40, 26,311.28 and 5,058.40

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Solution

The fourth proportional to 17,538.40, 26,311.28 and 5,058.40 is: 7,588.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,538.40 : 26,311.28 = 5,058.40 : x
  2. Step 2: Convert to fraction form
    17,538.40/26,311.28 = 5,058.40/x
  3. Step 3: Cross multiply
    17,538.40x = 26,311.28 × 5,058.40
  4. Step 4: Simplify right side
    17,538.40x = 133,092,978.75
  5. Step 5: Solve for x
    x = 133,092,978.75/17,538.40
  6. Step 6: Final answer
    x = 7,588.66

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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.