Home / 15,138.27-20,891.21-8,332.48

Finding the Fourth Proportional to 15,138.27, 20,891.21 and 8,332.48

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Solution

The fourth proportional to 15,138.27, 20,891.21 and 8,332.48 is: 11,499.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.27 : 20,891.21 = 8,332.48 : x
  2. Step 2: Convert to fraction form
    15,138.27/20,891.21 = 8,332.48/x
  3. Step 3: Cross multiply
    15,138.27x = 20,891.21 × 8,332.48
  4. Step 4: Simplify right side
    15,138.27x = 174,075,589.50
  5. Step 5: Solve for x
    x = 174,075,589.50/15,138.27
  6. Step 6: Final answer
    x = 11,499.04

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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.