Home / 28,254.40-42,367.92-8,529.28

Finding the Fourth Proportional to 28,254.40, 42,367.92 and 8,529.28

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Solution

The fourth proportional to 28,254.40, 42,367.92 and 8,529.28 is: 12,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.40 : 42,367.92 = 8,529.28 : x
  2. Step 2: Convert to fraction form
    28,254.40/42,367.92 = 8,529.28/x
  3. Step 3: Cross multiply
    28,254.40x = 42,367.92 × 8,529.28
  4. Step 4: Simplify right side
    28,254.40x = 361,367,852.70
  5. Step 5: Solve for x
    x = 361,367,852.70/28,254.40
  6. Step 6: Final answer
    x = 12,789.79

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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.