Home / 38,521.20-57,719.70-21,831.60

Finding the Fourth Proportional to 38,521.20, 57,719.70 and 21,831.60

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Solution

The fourth proportional to 38,521.20, 57,719.70 and 21,831.60 is: 32,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,521.20 : 57,719.70 = 21,831.60 : x
  2. Step 2: Convert to fraction form
    38,521.20/57,719.70 = 21,831.60/x
  3. Step 3: Cross multiply
    38,521.20x = 57,719.70 × 21,831.60
  4. Step 4: Simplify right side
    38,521.20x = 1,260,113,402.52
  5. Step 5: Solve for x
    x = 1,260,113,402.52/38,521.20
  6. Step 6: Final answer
    x = 32,712.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.