Home / 28,545.80-39,393.27-15,799.86

Finding the Fourth Proportional to 28,545.80, 39,393.27 and 15,799.86

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Solution

The fourth proportional to 28,545.80, 39,393.27 and 15,799.86 is: 21,803.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.80 : 39,393.27 = 15,799.86 : x
  2. Step 2: Convert to fraction form
    28,545.80/39,393.27 = 15,799.86/x
  3. Step 3: Cross multiply
    28,545.80x = 39,393.27 × 15,799.86
  4. Step 4: Simplify right side
    28,545.80x = 622,408,150.94
  5. Step 5: Solve for x
    x = 622,408,150.94/28,545.80
  6. Step 6: Final answer
    x = 21,803.85

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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.