Home / 28,261.11-42,398.13-12,253.32

Finding the Fourth Proportional to 28,261.11, 42,398.13 and 12,253.32

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Solution

The fourth proportional to 28,261.11, 42,398.13 and 12,253.32 is: 18,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.11 : 42,398.13 = 12,253.32 : x
  2. Step 2: Convert to fraction form
    28,261.11/42,398.13 = 12,253.32/x
  3. Step 3: Cross multiply
    28,261.11x = 42,398.13 × 12,253.32
  4. Step 4: Simplify right side
    28,261.11x = 519,517,865.78
  5. Step 5: Solve for x
    x = 519,517,865.78/28,261.11
  6. Step 6: Final answer
    x = 18,382.78

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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.