Home / 28,339.20-42,508.80-9,866.88

Finding the Fourth Proportional to 28,339.20, 42,508.80 and 9,866.88

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Solution

The fourth proportional to 28,339.20, 42,508.80 and 9,866.88 is: 14,800.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.20 : 42,508.80 = 9,866.88 : x
  2. Step 2: Convert to fraction form
    28,339.20/42,508.80 = 9,866.88/x
  3. Step 3: Cross multiply
    28,339.20x = 42,508.80 × 9,866.88
  4. Step 4: Simplify right side
    28,339.20x = 419,429,228.54
  5. Step 5: Solve for x
    x = 419,429,228.54/28,339.20
  6. Step 6: Final answer
    x = 14,800.32

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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.