Home / 39,757.56-54,865.98-21,854.28

Finding the Fourth Proportional to 39,757.56, 54,865.98 and 21,854.28

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Solution

The fourth proportional to 39,757.56, 54,865.98 and 21,854.28 is: 30,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,757.56 : 54,865.98 = 21,854.28 : x
  2. Step 2: Convert to fraction form
    39,757.56/54,865.98 = 21,854.28/x
  3. Step 3: Cross multiply
    39,757.56x = 54,865.98 × 21,854.28
  4. Step 4: Simplify right side
    39,757.56x = 1,199,056,489.39
  5. Step 5: Solve for x
    x = 1,199,056,489.39/39,757.56
  6. Step 6: Final answer
    x = 30,159.21

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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.