Home / 39,422.96-59,121.72-13,120.72

Finding the Fourth Proportional to 39,422.96, 59,121.72 and 13,120.72

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Solution

The fourth proportional to 39,422.96, 59,121.72 and 13,120.72 is: 19,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,422.96 : 59,121.72 = 13,120.72 : x
  2. Step 2: Convert to fraction form
    39,422.96/59,121.72 = 13,120.72/x
  3. Step 3: Cross multiply
    39,422.96x = 59,121.72 × 13,120.72
  4. Step 4: Simplify right side
    39,422.96x = 775,719,534.04
  5. Step 5: Solve for x
    x = 775,719,534.04/39,422.96
  6. Step 6: Final answer
    x = 19,676.85

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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.