Home / 20,165.36-30,254.19-10,311.56

Finding the Fourth Proportional to 20,165.36, 30,254.19 and 10,311.56

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Solution

The fourth proportional to 20,165.36, 30,254.19 and 10,311.56 is: 15,470.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.36 : 30,254.19 = 10,311.56 : x
  2. Step 2: Convert to fraction form
    20,165.36/30,254.19 = 10,311.56/x
  3. Step 3: Cross multiply
    20,165.36x = 30,254.19 × 10,311.56
  4. Step 4: Simplify right side
    20,165.36x = 311,967,692.61
  5. Step 5: Solve for x
    x = 311,967,692.61/20,165.36
  6. Step 6: Final answer
    x = 15,470.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.