Home / 20,079.70-30,121.12-5,288.44

Finding the Fourth Proportional to 20,079.70, 30,121.12 and 5,288.44

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Solution

The fourth proportional to 20,079.70, 30,121.12 and 5,288.44 is: 7,933.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.70 : 30,121.12 = 5,288.44 : x
  2. Step 2: Convert to fraction form
    20,079.70/30,121.12 = 5,288.44/x
  3. Step 3: Cross multiply
    20,079.70x = 30,121.12 × 5,288.44
  4. Step 4: Simplify right side
    20,079.70x = 159,293,693.89
  5. Step 5: Solve for x
    x = 159,293,693.89/20,079.70
  6. Step 6: Final answer
    x = 7,933.07

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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.