Home / 15,025.29-20,734.26-8,219.20

Finding the Fourth Proportional to 15,025.29, 20,734.26 and 8,219.20

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Solution

The fourth proportional to 15,025.29, 20,734.26 and 8,219.20 is: 11,342.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.29 : 20,734.26 = 8,219.20 : x
  2. Step 2: Convert to fraction form
    15,025.29/20,734.26 = 8,219.20/x
  3. Step 3: Cross multiply
    15,025.29x = 20,734.26 × 8,219.20
  4. Step 4: Simplify right side
    15,025.29x = 170,418,998.50
  5. Step 5: Solve for x
    x = 170,418,998.50/15,025.29
  6. Step 6: Final answer
    x = 11,342.14

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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.