Home / 38,671.24-57,987.30-18,920.20

Finding the Fourth Proportional to 38,671.24, 57,987.30 and 18,920.20

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Solution

The fourth proportional to 38,671.24, 57,987.30 and 18,920.20 is: 28,370.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,671.24 : 57,987.30 = 18,920.20 : x
  2. Step 2: Convert to fraction form
    38,671.24/57,987.30 = 18,920.20/x
  3. Step 3: Cross multiply
    38,671.24x = 57,987.30 × 18,920.20
  4. Step 4: Simplify right side
    38,671.24x = 1,097,131,313.46
  5. Step 5: Solve for x
    x = 1,097,131,313.46/38,671.24
  6. Step 6: Final answer
    x = 28,370.73

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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.