Home / 13,545.60-20,286.72-11,716.80

Finding the Fourth Proportional to 13,545.60, 20,286.72 and 11,716.80

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Solution

The fourth proportional to 13,545.60, 20,286.72 and 11,716.80 is: 17,547.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.60 : 20,286.72 = 11,716.80 : x
  2. Step 2: Convert to fraction form
    13,545.60/20,286.72 = 11,716.80/x
  3. Step 3: Cross multiply
    13,545.60x = 20,286.72 × 11,716.80
  4. Step 4: Simplify right side
    13,545.60x = 237,695,440.90
  5. Step 5: Solve for x
    x = 237,695,440.90/13,545.60
  6. Step 6: Final answer
    x = 17,547.80

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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.