Home / 39,278.31-54,203.17-21,373.36

Finding the Fourth Proportional to 39,278.31, 54,203.17 and 21,373.36

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Solution

The fourth proportional to 39,278.31, 54,203.17 and 21,373.36 is: 29,494.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.31 : 54,203.17 = 21,373.36 : x
  2. Step 2: Convert to fraction form
    39,278.31/54,203.17 = 21,373.36/x
  3. Step 3: Cross multiply
    39,278.31x = 54,203.17 × 21,373.36
  4. Step 4: Simplify right side
    39,278.31x = 1,158,503,865.55
  5. Step 5: Solve for x
    x = 1,158,503,865.55/39,278.31
  6. Step 6: Final answer
    x = 29,494.75

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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.