Home / 13,144.50-19,709.18-8,989.55

Finding the Fourth Proportional to 13,144.50, 19,709.18 and 8,989.55

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Solution

The fourth proportional to 13,144.50, 19,709.18 and 8,989.55 is: 13,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.50 : 19,709.18 = 8,989.55 : x
  2. Step 2: Convert to fraction form
    13,144.50/19,709.18 = 8,989.55/x
  3. Step 3: Cross multiply
    13,144.50x = 19,709.18 × 8,989.55
  4. Step 4: Simplify right side
    13,144.50x = 177,176,659.07
  5. Step 5: Solve for x
    x = 177,176,659.07/13,144.50
  6. Step 6: Final answer
    x = 13,479.15

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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.