Home / 27,789.15-38,324.18-20,253.05

Finding the Fourth Proportional to 27,789.15, 38,324.18 and 20,253.05

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Solution

The fourth proportional to 27,789.15, 38,324.18 and 20,253.05 is: 27,931.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.15 : 38,324.18 = 20,253.05 : x
  2. Step 2: Convert to fraction form
    27,789.15/38,324.18 = 20,253.05/x
  3. Step 3: Cross multiply
    27,789.15x = 38,324.18 × 20,253.05
  4. Step 4: Simplify right side
    27,789.15x = 776,181,342.13
  5. Step 5: Solve for x
    x = 776,181,342.13/27,789.15
  6. Step 6: Final answer
    x = 27,931.09

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Half scale
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Double scale
Find fourth proportional to 27,790.15, 38,325.56 and 20,254.05
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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.