Home / 27,892.20-38,458.71-20,806.32

Finding the Fourth Proportional to 27,892.20, 38,458.71 and 20,806.32

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Solution

The fourth proportional to 27,892.20, 38,458.71 and 20,806.32 is: 28,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,892.20 : 38,458.71 = 20,806.32 : x
  2. Step 2: Convert to fraction form
    27,892.20/38,458.71 = 20,806.32/x
  3. Step 3: Cross multiply
    27,892.20x = 38,458.71 × 20,806.32
  4. Step 4: Simplify right side
    27,892.20x = 800,184,227.05
  5. Step 5: Solve for x
    x = 800,184,227.05/27,892.20
  6. Step 6: Final answer
    x = 28,688.46

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Half scale
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Double scale
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Similar ratio
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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.