Home / 39,180.50-54,069.12-21,275.51

Finding the Fourth Proportional to 39,180.50, 54,069.12 and 21,275.51

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Solution

The fourth proportional to 39,180.50, 54,069.12 and 21,275.51 is: 29,360.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,180.50 : 54,069.12 = 21,275.51 : x
  2. Step 2: Convert to fraction form
    39,180.50/54,069.12 = 21,275.51/x
  3. Step 3: Cross multiply
    39,180.50x = 54,069.12 × 21,275.51
  4. Step 4: Simplify right side
    39,180.50x = 1,150,348,103.25
  5. Step 5: Solve for x
    x = 1,150,348,103.25/39,180.50
  6. Step 6: Final answer
    x = 29,360.22

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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.