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Finding the Fourth Proportional to 28,244.78, 38,965.48 and 17,486.79

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Solution

The fourth proportional to 28,244.78, 38,965.48 and 17,486.79 is: 24,124.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.78 : 38,965.48 = 17,486.79 : x
  2. Step 2: Convert to fraction form
    28,244.78/38,965.48 = 17,486.79/x
  3. Step 3: Cross multiply
    28,244.78x = 38,965.48 × 17,486.79
  4. Step 4: Simplify right side
    28,244.78x = 681,381,025.35
  5. Step 5: Solve for x
    x = 681,381,025.35/28,244.78
  6. Step 6: Final answer
    x = 24,124.14

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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.