Home / 27,665.10-38,177.67-15,728.44

Finding the Fourth Proportional to 27,665.10, 38,177.67 and 15,728.44

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Solution

The fourth proportional to 27,665.10, 38,177.67 and 15,728.44 is: 21,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,665.10 : 38,177.67 = 15,728.44 : x
  2. Step 2: Convert to fraction form
    27,665.10/38,177.67 = 15,728.44/x
  3. Step 3: Cross multiply
    27,665.10x = 38,177.67 × 15,728.44
  4. Step 4: Simplify right side
    27,665.10x = 600,475,191.93
  5. Step 5: Solve for x
    x = 600,475,191.93/27,665.10
  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.