Home / 38,135.27-52,625.73-21,139.20

Finding the Fourth Proportional to 38,135.27, 52,625.73 and 21,139.20

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Solution

The fourth proportional to 38,135.27, 52,625.73 and 21,139.20 is: 29,171.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,135.27 : 52,625.73 = 21,139.20 : x
  2. Step 2: Convert to fraction form
    38,135.27/52,625.73 = 21,139.20/x
  3. Step 3: Cross multiply
    38,135.27x = 52,625.73 × 21,139.20
  4. Step 4: Simplify right side
    38,135.27x = 1,112,465,831.62
  5. Step 5: Solve for x
    x = 1,112,465,831.62/38,135.27
  6. Step 6: Final answer
    x = 29,171.58

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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.