Home / 28,252.41-42,378.62-20,510.43

Finding the Fourth Proportional to 28,252.41, 42,378.62 and 20,510.43

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Solution

The fourth proportional to 28,252.41, 42,378.62 and 20,510.43 is: 30,765.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.41 : 42,378.62 = 20,510.43 : x
  2. Step 2: Convert to fraction form
    28,252.41/42,378.62 = 20,510.43/x
  3. Step 3: Cross multiply
    28,252.41x = 42,378.62 × 20,510.43
  4. Step 4: Simplify right side
    28,252.41x = 869,203,616.45
  5. Step 5: Solve for x
    x = 869,203,616.45/28,252.41
  6. Step 6: Final answer
    x = 30,765.65

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Similar ratio
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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.