Home / 28,170.59-42,257.09-10,641.78

Finding the Fourth Proportional to 28,170.59, 42,257.09 and 10,641.78

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Solution

The fourth proportional to 28,170.59, 42,257.09 and 10,641.78 is: 15,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.59 : 42,257.09 = 10,641.78 : x
  2. Step 2: Convert to fraction form
    28,170.59/42,257.09 = 10,641.78/x
  3. Step 3: Cross multiply
    28,170.59x = 42,257.09 × 10,641.78
  4. Step 4: Simplify right side
    28,170.59x = 449,690,681.82
  5. Step 5: Solve for x
    x = 449,690,681.82/28,170.59
  6. Step 6: Final answer
    x = 15,963.13

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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.