Home / 39,159.18-54,040.73-21,254.22

Finding the Fourth Proportional to 39,159.18, 54,040.73 and 21,254.22

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Solution

The fourth proportional to 39,159.18, 54,040.73 and 21,254.22 is: 29,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,159.18 : 54,040.73 = 21,254.22 : x
  2. Step 2: Convert to fraction form
    39,159.18/54,040.73 = 21,254.22/x
  3. Step 3: Cross multiply
    39,159.18x = 54,040.73 × 21,254.22
  4. Step 4: Simplify right side
    39,159.18x = 1,148,593,564.38
  5. Step 5: Solve for x
    x = 1,148,593,564.38/39,159.18
  6. Step 6: Final answer
    x = 29,331.40

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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.