Home / 39,463.20-54,456.40-21,554.40

Finding the Fourth Proportional to 39,463.20, 54,456.40 and 21,554.40

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Solution

The fourth proportional to 39,463.20, 54,456.40 and 21,554.40 is: 29,743.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,463.20 : 54,456.40 = 21,554.40 : x
  2. Step 2: Convert to fraction form
    39,463.20/54,456.40 = 21,554.40/x
  3. Step 3: Cross multiply
    39,463.20x = 54,456.40 × 21,554.40
  4. Step 4: Simplify right side
    39,463.20x = 1,173,775,028.16
  5. Step 5: Solve for x
    x = 1,173,775,028.16/39,463.20
  6. Step 6: Final answer
    x = 29,743.53

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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.