Home / 20,324.71-30,487.32-7,167.86

Finding the Fourth Proportional to 20,324.71, 30,487.32 and 7,167.86

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Solution

The fourth proportional to 20,324.71, 30,487.32 and 7,167.86 is: 10,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.71 : 30,487.32 = 7,167.86 : x
  2. Step 2: Convert to fraction form
    20,324.71/30,487.32 = 7,167.86/x
  3. Step 3: Cross multiply
    20,324.71x = 30,487.32 × 7,167.86
  4. Step 4: Simplify right side
    20,324.71x = 218,528,689.10
  5. Step 5: Solve for x
    x = 218,528,689.10/20,324.71
  6. Step 6: Final answer
    x = 10,751.87

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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.