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Finding the Fourth Proportional to 38,939.97, 58,409.11 and 10,859.28

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Solution

The fourth proportional to 38,939.97, 58,409.11 and 10,859.28 is: 16,288.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,939.97 : 58,409.11 = 10,859.28 : x
  2. Step 2: Convert to fraction form
    38,939.97/58,409.11 = 10,859.28/x
  3. Step 3: Cross multiply
    38,939.97x = 58,409.11 × 10,859.28
  4. Step 4: Simplify right side
    38,939.97x = 634,280,880.04
  5. Step 5: Solve for x
    x = 634,280,880.04/38,939.97
  6. Step 6: Final answer
    x = 16,288.68

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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.