Home / 39,236.67-54,147.18-21,331.63

Finding the Fourth Proportional to 39,236.67, 54,147.18 and 21,331.63

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Solution

The fourth proportional to 39,236.67, 54,147.18 and 21,331.63 is: 29,437.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,236.67 : 54,147.18 = 21,331.63 : x
  2. Step 2: Convert to fraction form
    39,236.67/54,147.18 = 21,331.63/x
  3. Step 3: Cross multiply
    39,236.67x = 54,147.18 × 21,331.63
  4. Step 4: Simplify right side
    39,236.67x = 1,155,047,609.30
  5. Step 5: Solve for x
    x = 1,155,047,609.30/39,236.67
  6. Step 6: Final answer
    x = 29,437.96

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Half scale
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Double scale
Find fourth proportional to 39,237.67, 54,148.56 and 21,332.63
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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.