Home / 13,812.24-20,670.90-8,545.20

Finding the Fourth Proportional to 13,812.24, 20,670.90 and 8,545.20

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Solution

The fourth proportional to 13,812.24, 20,670.90 and 8,545.20 is: 12,788.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.24 : 20,670.90 = 8,545.20 : x
  2. Step 2: Convert to fraction form
    13,812.24/20,670.90 = 8,545.20/x
  3. Step 3: Cross multiply
    13,812.24x = 20,670.90 × 8,545.20
  4. Step 4: Simplify right side
    13,812.24x = 176,636,974.68
  5. Step 5: Solve for x
    x = 176,636,974.68/13,812.24
  6. Step 6: Final answer
    x = 12,788.44

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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.