Home / 20,081.24-30,122.16-5,291.65

Finding the Fourth Proportional to 20,081.24, 30,122.16 and 5,291.65

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Solution

The fourth proportional to 20,081.24, 30,122.16 and 5,291.65 is: 7,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.24 : 30,122.16 = 5,291.65 : x
  2. Step 2: Convert to fraction form
    20,081.24/30,122.16 = 5,291.65/x
  3. Step 3: Cross multiply
    20,081.24x = 30,122.16 × 5,291.65
  4. Step 4: Simplify right side
    20,081.24x = 159,395,750.89
  5. Step 5: Solve for x
    x = 159,395,750.89/20,081.24
  6. Step 6: Final answer
    x = 7,937.55

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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.