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Finding the Fourth Proportional to 34,687.86, 47,869.33 and 18,772.48

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Solution

The fourth proportional to 34,687.86, 47,869.33 and 18,772.48 is: 25,906.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,687.86 : 47,869.33 = 18,772.48 : x
  2. Step 2: Convert to fraction form
    34,687.86/47,869.33 = 18,772.48/x
  3. Step 3: Cross multiply
    34,687.86x = 47,869.33 × 18,772.48
  4. Step 4: Simplify right side
    34,687.86x = 898,626,040.04
  5. Step 5: Solve for x
    x = 898,626,040.04/34,687.86
  6. Step 6: Final answer
    x = 25,906.07

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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.