Home / 27,665.11-38,177.67-15,728.45

Finding the Fourth Proportional to 27,665.11, 38,177.67 and 15,728.45

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Solution

The fourth proportional to 27,665.11, 38,177.67 and 15,728.45 is: 21,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,665.11 : 38,177.67 = 15,728.45 : x
  2. Step 2: Convert to fraction form
    27,665.11/38,177.67 = 15,728.45/x
  3. Step 3: Cross multiply
    27,665.11x = 38,177.67 × 15,728.45
  4. Step 4: Simplify right side
    27,665.11x = 600,475,304.18
  5. Step 5: Solve for x
    x = 600,475,304.18/27,665.11
  6. Step 6: Final answer
    x = 21,705.15

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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.