Home / 20,719.14-31,081.89-7,568.39

Finding the Fourth Proportional to 20,719.14, 31,081.89 and 7,568.39

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Solution

The fourth proportional to 20,719.14, 31,081.89 and 7,568.39 is: 11,353.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.14 : 31,081.89 = 7,568.39 : x
  2. Step 2: Convert to fraction form
    20,719.14/31,081.89 = 7,568.39/x
  3. Step 3: Cross multiply
    20,719.14x = 31,081.89 × 7,568.39
  4. Step 4: Simplify right side
    20,719.14x = 235,239,710.05
  5. Step 5: Solve for x
    x = 235,239,710.05/20,719.14
  6. Step 6: Final answer
    x = 11,353.74

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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.