Home / 38,143.86-57,218.31-13,186.32

Finding the Fourth Proportional to 38,143.86, 57,218.31 and 13,186.32

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Solution

The fourth proportional to 38,143.86, 57,218.31 and 13,186.32 is: 19,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,143.86 : 57,218.31 = 13,186.32 : x
  2. Step 2: Convert to fraction form
    38,143.86/57,218.31 = 13,186.32/x
  3. Step 3: Cross multiply
    38,143.86x = 57,218.31 × 13,186.32
  4. Step 4: Simplify right side
    38,143.86x = 754,498,945.52
  5. Step 5: Solve for x
    x = 754,498,945.52/38,143.86
  6. Step 6: Final answer
    x = 19,780.35

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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.