Home / 28,315.20-42,478.17-9,340.98

Finding the Fourth Proportional to 28,315.20, 42,478.17 and 9,340.98

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Solution

The fourth proportional to 28,315.20, 42,478.17 and 9,340.98 is: 14,013.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.20 : 42,478.17 = 9,340.98 : x
  2. Step 2: Convert to fraction form
    28,315.20/42,478.17 = 9,340.98/x
  3. Step 3: Cross multiply
    28,315.20x = 42,478.17 × 9,340.98
  4. Step 4: Simplify right side
    28,315.20x = 396,787,736.41
  5. Step 5: Solve for x
    x = 396,787,736.41/28,315.20
  6. Step 6: Final answer
    x = 14,013.24

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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.