Home / 39,214.54-54,116.13-21,309.78

Finding the Fourth Proportional to 39,214.54, 54,116.13 and 21,309.78

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Solution

The fourth proportional to 39,214.54, 54,116.13 and 21,309.78 is: 29,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,214.54 : 54,116.13 = 21,309.78 : x
  2. Step 2: Convert to fraction form
    39,214.54/54,116.13 = 21,309.78/x
  3. Step 3: Cross multiply
    39,214.54x = 54,116.13 × 21,309.78
  4. Step 4: Simplify right side
    39,214.54x = 1,153,202,824.75
  5. Step 5: Solve for x
    x = 1,153,202,824.75/39,214.54
  6. Step 6: Final answer
    x = 29,407.53

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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.