Home / 27,618.34-38,115.46-15,685.42

Finding the Fourth Proportional to 27,618.34, 38,115.46 and 15,685.42

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Solution

The fourth proportional to 27,618.34, 38,115.46 and 15,685.42 is: 21,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,618.34 : 38,115.46 = 15,685.42 : x
  2. Step 2: Convert to fraction form
    27,618.34/38,115.46 = 15,685.42/x
  3. Step 3: Cross multiply
    27,618.34x = 38,115.46 × 15,685.42
  4. Step 4: Simplify right side
    27,618.34x = 597,856,998.59
  5. Step 5: Solve for x
    x = 597,856,998.59/27,618.34
  6. Step 6: Final answer
    x = 21,647.10

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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.