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Finding the Fourth Proportional to 39,894.56, 59,839.68 and 12,192.56

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Solution

The fourth proportional to 39,894.56, 59,839.68 and 12,192.56 is: 18,288.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,894.56 : 59,839.68 = 12,192.56 : x
  2. Step 2: Convert to fraction form
    39,894.56/59,839.68 = 12,192.56/x
  3. Step 3: Cross multiply
    39,894.56x = 59,839.68 × 12,192.56
  4. Step 4: Simplify right side
    39,894.56x = 729,598,888.78
  5. Step 5: Solve for x
    x = 729,598,888.78/39,894.56
  6. Step 6: Final answer
    x = 18,288.18

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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.