Home / 27,687.40-38,194.06-18,737.90

Finding the Fourth Proportional to 27,687.40, 38,194.06 and 18,737.90

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Solution

The fourth proportional to 27,687.40, 38,194.06 and 18,737.90 is: 25,848.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.40 : 38,194.06 = 18,737.90 : x
  2. Step 2: Convert to fraction form
    27,687.40/38,194.06 = 18,737.90/x
  3. Step 3: Cross multiply
    27,687.40x = 38,194.06 × 18,737.90
  4. Step 4: Simplify right side
    27,687.40x = 715,676,476.87
  5. Step 5: Solve for x
    x = 715,676,476.87/27,687.40
  6. Step 6: Final answer
    x = 25,848.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.