Home / 12,545.49-18,821.68-10,199.66

Finding the Fourth Proportional to 12,545.49, 18,821.68 and 10,199.66

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Solution

The fourth proportional to 12,545.49, 18,821.68 and 10,199.66 is: 15,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.49 : 18,821.68 = 10,199.66 : x
  2. Step 2: Convert to fraction form
    12,545.49/18,821.68 = 10,199.66/x
  3. Step 3: Cross multiply
    12,545.49x = 18,821.68 × 10,199.66
  4. Step 4: Simplify right side
    12,545.49x = 191,974,758.18
  5. Step 5: Solve for x
    x = 191,974,758.18/12,545.49
  6. Step 6: Final answer
    x = 15,302.29

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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.