Home / 13,812.20-20,718.30-9,434.60

Finding the Fourth Proportional to 13,812.20, 20,718.30 and 9,434.60

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Solution

The fourth proportional to 13,812.20, 20,718.30 and 9,434.60 is: 14,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.20 : 20,718.30 = 9,434.60 : x
  2. Step 2: Convert to fraction form
    13,812.20/20,718.30 = 9,434.60/x
  3. Step 3: Cross multiply
    13,812.20x = 20,718.30 × 9,434.60
  4. Step 4: Simplify right side
    13,812.20x = 195,468,873.18
  5. Step 5: Solve for x
    x = 195,468,873.18/13,812.20
  6. Step 6: Final answer
    x = 14,151.90

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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.