Home / 20,479.29-30,721.11-5,688.24

Finding the Fourth Proportional to 20,479.29, 30,721.11 and 5,688.24

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Solution

The fourth proportional to 20,479.29, 30,721.11 and 5,688.24 is: 8,532.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.29 : 30,721.11 = 5,688.24 : x
  2. Step 2: Convert to fraction form
    20,479.29/30,721.11 = 5,688.24/x
  3. Step 3: Cross multiply
    20,479.29x = 30,721.11 × 5,688.24
  4. Step 4: Simplify right side
    20,479.29x = 174,749,046.75
  5. Step 5: Solve for x
    x = 174,749,046.75/20,479.29
  6. Step 6: Final answer
    x = 8,532.96

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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.