Home / 15,025.08-20,734-8,218.99

Finding the Fourth Proportional to 15,025.08, 20,734 and 8,218.99

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Solution

The fourth proportional to 15,025.08, 20,734 and 8,218.99 is: 11,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.08 : 20,734 = 8,218.99 : x
  2. Step 2: Convert to fraction form
    15,025.08/20,734 = 8,218.99/x
  3. Step 3: Cross multiply
    15,025.08x = 20,734 × 8,218.99
  4. Step 4: Simplify right side
    15,025.08x = 170,412,538.66
  5. Step 5: Solve for x
    x = 170,412,538.66/15,025.08
  6. Step 6: Final answer
    x = 11,341.87

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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.