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Finding the Fourth Proportional to 38,859.84, 58,275.45 and 13,893.12

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Solution

The fourth proportional to 38,859.84, 58,275.45 and 13,893.12 is: 20,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,859.84 : 58,275.45 = 13,893.12 : x
  2. Step 2: Convert to fraction form
    38,859.84/58,275.45 = 13,893.12/x
  3. Step 3: Cross multiply
    38,859.84x = 58,275.45 × 13,893.12
  4. Step 4: Simplify right side
    38,859.84x = 809,627,819.90
  5. Step 5: Solve for x
    x = 809,627,819.90/38,859.84
  6. Step 6: Final answer
    x = 20,834.56

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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.