Home / 38,121.30-57,218.40-19,422.45

Finding the Fourth Proportional to 38,121.30, 57,218.40 and 19,422.45

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Solution

The fourth proportional to 38,121.30, 57,218.40 and 19,422.45 is: 29,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.30 : 57,218.40 = 19,422.45 : x
  2. Step 2: Convert to fraction form
    38,121.30/57,218.40 = 19,422.45/x
  3. Step 3: Cross multiply
    38,121.30x = 57,218.40 × 19,422.45
  4. Step 4: Simplify right side
    38,121.30x = 1,111,321,513.08
  5. Step 5: Solve for x
    x = 1,111,321,513.08/38,121.30
  6. Step 6: Final answer
    x = 29,152.25

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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.