Home / 12,311.28-18,550.02-10,168.02

Finding the Fourth Proportional to 12,311.28, 18,550.02 and 10,168.02

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Solution

The fourth proportional to 12,311.28, 18,550.02 and 10,168.02 is: 15,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.28 : 18,550.02 = 10,168.02 : x
  2. Step 2: Convert to fraction form
    12,311.28/18,550.02 = 10,168.02/x
  3. Step 3: Cross multiply
    12,311.28x = 18,550.02 × 10,168.02
  4. Step 4: Simplify right side
    12,311.28x = 188,616,974.36
  5. Step 5: Solve for x
    x = 188,616,974.36/12,311.28
  6. Step 6: Final answer
    x = 15,320.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.