Home / 39,040.38-53,875.71-21,135.54

Finding the Fourth Proportional to 39,040.38, 53,875.71 and 21,135.54

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Solution

The fourth proportional to 39,040.38, 53,875.71 and 21,135.54 is: 29,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.38 : 53,875.71 = 21,135.54 : x
  2. Step 2: Convert to fraction form
    39,040.38/53,875.71 = 21,135.54/x
  3. Step 3: Cross multiply
    39,040.38x = 53,875.71 × 21,135.54
  4. Step 4: Simplify right side
    39,040.38x = 1,138,692,223.73
  5. Step 5: Solve for x
    x = 1,138,692,223.73/39,040.38
  6. Step 6: Final answer
    x = 29,167.04

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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.