Home / 38,501.20-57,689.70-21,811.60

Finding the Fourth Proportional to 38,501.20, 57,689.70 and 21,811.60

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Solution

The fourth proportional to 38,501.20, 57,689.70 and 21,811.60 is: 32,682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,501.20 : 57,689.70 = 21,811.60 : x
  2. Step 2: Convert to fraction form
    38,501.20/57,689.70 = 21,811.60/x
  3. Step 3: Cross multiply
    38,501.20x = 57,689.70 × 21,811.60
  4. Step 4: Simplify right side
    38,501.20x = 1,258,304,660.52
  5. Step 5: Solve for x
    x = 1,258,304,660.52/38,501.20
  6. Step 6: Final answer
    x = 32,682.22

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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.