Home / 27,158.97-40,678.25-20,872.70

Finding the Fourth Proportional to 27,158.97, 40,678.25 and 20,872.70

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Solution

The fourth proportional to 27,158.97, 40,678.25 and 20,872.70 is: 31,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,158.97 : 40,678.25 = 20,872.70 : x
  2. Step 2: Convert to fraction form
    27,158.97/40,678.25 = 20,872.70/x
  3. Step 3: Cross multiply
    27,158.97x = 40,678.25 × 20,872.70
  4. Step 4: Simplify right side
    27,158.97x = 849,064,601.02
  5. Step 5: Solve for x
    x = 849,064,601.02/27,158.97
  6. Step 6: Final answer
    x = 31,262.77

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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.