Home / 28,947.18-39,951.41-18,337.80

Finding the Fourth Proportional to 28,947.18, 39,951.41 and 18,337.80

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Solution

The fourth proportional to 28,947.18, 39,951.41 and 18,337.80 is: 25,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.18 : 39,951.41 = 18,337.80 : x
  2. Step 2: Convert to fraction form
    28,947.18/39,951.41 = 18,337.80/x
  3. Step 3: Cross multiply
    28,947.18x = 39,951.41 × 18,337.80
  4. Step 4: Simplify right side
    28,947.18x = 732,620,874.61
  5. Step 5: Solve for x
    x = 732,620,874.61/28,947.18
  6. Step 6: Final answer
    x = 25,308.89

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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.