Home / 39,159.88-54,040.69-21,254.89

Finding the Fourth Proportional to 39,159.88, 54,040.69 and 21,254.89

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Solution

The fourth proportional to 39,159.88, 54,040.69 and 21,254.89 is: 29,331.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,159.88 : 54,040.69 = 21,254.89 : x
  2. Step 2: Convert to fraction form
    39,159.88/54,040.69 = 21,254.89/x
  3. Step 3: Cross multiply
    39,159.88x = 54,040.69 × 21,254.89
  4. Step 4: Simplify right side
    39,159.88x = 1,148,628,921.47
  5. Step 5: Solve for x
    x = 1,148,628,921.47/39,159.88
  6. Step 6: Final answer
    x = 29,331.78

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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.