Home / 27,995.30-38,636.24-20,909.42

Finding the Fourth Proportional to 27,995.30, 38,636.24 and 20,909.42

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Solution

The fourth proportional to 27,995.30, 38,636.24 and 20,909.42 is: 28,857.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.30 : 38,636.24 = 20,909.42 : x
  2. Step 2: Convert to fraction form
    27,995.30/38,636.24 = 20,909.42/x
  3. Step 3: Cross multiply
    27,995.30x = 38,636.24 × 20,909.42
  4. Step 4: Simplify right side
    27,995.30x = 807,861,369.38
  5. Step 5: Solve for x
    x = 807,861,369.38/27,995.30
  6. Step 6: Final answer
    x = 28,857.04

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Half scale
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Double scale
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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.