Home / 39,331.35-54,278.31-21,427.52

Finding the Fourth Proportional to 39,331.35, 54,278.31 and 21,427.52

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Solution

The fourth proportional to 39,331.35, 54,278.31 and 21,427.52 is: 29,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,331.35 : 54,278.31 = 21,427.52 : x
  2. Step 2: Convert to fraction form
    39,331.35/54,278.31 = 21,427.52/x
  3. Step 3: Cross multiply
    39,331.35x = 54,278.31 × 21,427.52
  4. Step 4: Simplify right side
    39,331.35x = 1,163,049,301.70
  5. Step 5: Solve for x
    x = 1,163,049,301.70/39,331.35
  6. Step 6: Final answer
    x = 29,570.54

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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.