Home / 38,821.83-58,218.40-13,855.20

Finding the Fourth Proportional to 38,821.83, 58,218.40 and 13,855.20

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Solution

The fourth proportional to 38,821.83, 58,218.40 and 13,855.20 is: 20,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,821.83 : 58,218.40 = 13,855.20 : x
  2. Step 2: Convert to fraction form
    38,821.83/58,218.40 = 13,855.20/x
  3. Step 3: Cross multiply
    38,821.83x = 58,218.40 × 13,855.20
  4. Step 4: Simplify right side
    38,821.83x = 806,627,575.68
  5. Step 5: Solve for x
    x = 806,627,575.68/38,821.83
  6. Step 6: Final answer
    x = 20,777.68

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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.