Home / 15,164.20-20,939.52-9,508.45

Finding the Fourth Proportional to 15,164.20, 20,939.52 and 9,508.45

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Solution

The fourth proportional to 15,164.20, 20,939.52 and 9,508.45 is: 13,129.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.20 : 20,939.52 = 9,508.45 : x
  2. Step 2: Convert to fraction form
    15,164.20/20,939.52 = 9,508.45/x
  3. Step 3: Cross multiply
    15,164.20x = 20,939.52 × 9,508.45
  4. Step 4: Simplify right side
    15,164.20x = 199,102,378.94
  5. Step 5: Solve for x
    x = 199,102,378.94/15,164.20
  6. Step 6: Final answer
    x = 13,129.76

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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.