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Finding the Fourth Proportional to 17,690.40, 26,496.72 and 14,774.40

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Solution

The fourth proportional to 17,690.40, 26,496.72 and 14,774.40 is: 22,129.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.40 : 26,496.72 = 14,774.40 : x
  2. Step 2: Convert to fraction form
    17,690.40/26,496.72 = 14,774.40/x
  3. Step 3: Cross multiply
    17,690.40x = 26,496.72 × 14,774.40
  4. Step 4: Simplify right side
    17,690.40x = 391,473,139.97
  5. Step 5: Solve for x
    x = 391,473,139.97/17,690.40
  6. Step 6: Final answer
    x = 22,129.13

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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.