Home / 13,223.46-18,251.58-8,981.60

Finding the Fourth Proportional to 13,223.46, 18,251.58 and 8,981.60

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Solution

The fourth proportional to 13,223.46, 18,251.58 and 8,981.60 is: 12,396.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.46 : 18,251.58 = 8,981.60 : x
  2. Step 2: Convert to fraction form
    13,223.46/18,251.58 = 8,981.60/x
  3. Step 3: Cross multiply
    13,223.46x = 18,251.58 × 8,981.60
  4. Step 4: Simplify right side
    13,223.46x = 163,928,390.93
  5. Step 5: Solve for x
    x = 163,928,390.93/13,223.46
  6. Step 6: Final answer
    x = 12,396.79

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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.