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Finding the Fourth Proportional to 28,249.29, 38,971.68 and 17,491.29

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Solution

The fourth proportional to 28,249.29, 38,971.68 and 17,491.29 is: 24,130.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.29 : 38,971.68 = 17,491.29 : x
  2. Step 2: Convert to fraction form
    28,249.29/38,971.68 = 17,491.29/x
  3. Step 3: Cross multiply
    28,249.29x = 38,971.68 × 17,491.29
  4. Step 4: Simplify right side
    28,249.29x = 681,664,956.67
  5. Step 5: Solve for x
    x = 681,664,956.67/28,249.29
  6. Step 6: Final answer
    x = 24,130.34

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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.