Home / 20,517.68-28,324.68-15,970.34

Finding the Fourth Proportional to 20,517.68, 28,324.68 and 15,970.34

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Solution

The fourth proportional to 20,517.68, 28,324.68 and 15,970.34 is: 22,047.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.68 : 28,324.68 = 15,970.34 : x
  2. Step 2: Convert to fraction form
    20,517.68/28,324.68 = 15,970.34/x
  3. Step 3: Cross multiply
    20,517.68x = 28,324.68 × 15,970.34
  4. Step 4: Simplify right side
    20,517.68x = 452,354,769.99
  5. Step 5: Solve for x
    x = 452,354,769.99/20,517.68
  6. Step 6: Final answer
    x = 22,047.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.