Home / 39,394.38-54,363.31-21,489.52

Finding the Fourth Proportional to 39,394.38, 54,363.31 and 21,489.52

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Solution

The fourth proportional to 39,394.38, 54,363.31 and 21,489.52 is: 29,655.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,394.38 : 54,363.31 = 21,489.52 : x
  2. Step 2: Convert to fraction form
    39,394.38/54,363.31 = 21,489.52/x
  3. Step 3: Cross multiply
    39,394.38x = 54,363.31 × 21,489.52
  4. Step 4: Simplify right side
    39,394.38x = 1,168,241,437.51
  5. Step 5: Solve for x
    x = 1,168,241,437.51/39,394.38
  6. Step 6: Final answer
    x = 29,655.03

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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.