Home / 39,301.24-54,235.39-21,396.21

Finding the Fourth Proportional to 39,301.24, 54,235.39 and 21,396.21

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Solution

The fourth proportional to 39,301.24, 54,235.39 and 21,396.21 is: 29,526.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,301.24 : 54,235.39 = 21,396.21 : x
  2. Step 2: Convert to fraction form
    39,301.24/54,235.39 = 21,396.21/x
  3. Step 3: Cross multiply
    39,301.24x = 54,235.39 × 21,396.21
  4. Step 4: Simplify right side
    39,301.24x = 1,160,431,740.38
  5. Step 5: Solve for x
    x = 1,160,431,740.38/39,301.24
  6. Step 6: Final answer
    x = 29,526.59

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Double scale
Find fourth proportional to 39,302.24, 54,236.77 and 21,397.21
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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.