Home / 39,143.57-54,016.68-21,238.19

Finding the Fourth Proportional to 39,143.57, 54,016.68 and 21,238.19

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Solution

The fourth proportional to 39,143.57, 54,016.68 and 21,238.19 is: 29,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.57 : 54,016.68 = 21,238.19 : x
  2. Step 2: Convert to fraction form
    39,143.57/54,016.68 = 21,238.19/x
  3. Step 3: Cross multiply
    39,143.57x = 54,016.68 × 21,238.19
  4. Step 4: Simplify right side
    39,143.57x = 1,147,216,527.72
  5. Step 5: Solve for x
    x = 1,147,216,527.72/39,143.57
  6. Step 6: Final answer
    x = 29,307.92

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Half scale
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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.