Home / 39,390.19-54,357.12-22,394.14

Finding the Fourth Proportional to 39,390.19, 54,357.12 and 22,394.14

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Solution

The fourth proportional to 39,390.19, 54,357.12 and 22,394.14 is: 30,903.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.19 : 54,357.12 = 22,394.14 : x
  2. Step 2: Convert to fraction form
    39,390.19/54,357.12 = 22,394.14/x
  3. Step 3: Cross multiply
    39,390.19x = 54,357.12 × 22,394.14
  4. Step 4: Simplify right side
    39,390.19x = 1,217,280,819.38
  5. Step 5: Solve for x
    x = 1,217,280,819.38/39,390.19
  6. Step 6: Final answer
    x = 30,903.15

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Half scale
Find fourth proportional to 78,780.38, 108,714.24 and 44,788.28
Double scale
Find fourth proportional to 39,391.19, 54,358.50 and 22,395.14
Similar ratio
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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.