Home / 39,179.09-54,068.24-21,275.19

Finding the Fourth Proportional to 39,179.09, 54,068.24 and 21,275.19

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Solution

The fourth proportional to 39,179.09, 54,068.24 and 21,275.19 is: 29,360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,179.09 : 54,068.24 = 21,275.19 : x
  2. Step 2: Convert to fraction form
    39,179.09/54,068.24 = 21,275.19/x
  3. Step 3: Cross multiply
    39,179.09x = 54,068.24 × 21,275.19
  4. Step 4: Simplify right side
    39,179.09x = 1,150,312,132.15
  5. Step 5: Solve for x
    x = 1,150,312,132.15/39,179.09
  6. Step 6: Final answer
    x = 29,360.36

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Half scale
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Double 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.