Home / 27,798.40-38,352.30-15,853.12

Finding the Fourth Proportional to 27,798.40, 38,352.30 and 15,853.12

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Solution

The fourth proportional to 27,798.40, 38,352.30 and 15,853.12 is: 21,871.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,798.40 : 38,352.30 = 15,853.12 : x
  2. Step 2: Convert to fraction form
    27,798.40/38,352.30 = 15,853.12/x
  3. Step 3: Cross multiply
    27,798.40x = 38,352.30 × 15,853.12
  4. Step 4: Simplify right side
    27,798.40x = 608,003,614.18
  5. Step 5: Solve for x
    x = 608,003,614.18/27,798.40
  6. Step 6: Final answer
    x = 21,871.89

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Half scale
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Double scale
Find fourth proportional to 27,799.40, 38,353.68 and 15,854.12
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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.