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Finding the Fourth Proportional to 12,363.40, 18,549.42 and 8,219.80

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Solution

The fourth proportional to 12,363.40, 18,549.42 and 8,219.80 is: 12,332.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.40 : 18,549.42 = 8,219.80 : x
  2. Step 2: Convert to fraction form
    12,363.40/18,549.42 = 8,219.80/x
  3. Step 3: Cross multiply
    12,363.40x = 18,549.42 × 8,219.80
  4. Step 4: Simplify right side
    12,363.40x = 152,472,522.52
  5. Step 5: Solve for x
    x = 152,472,522.52/12,363.40
  6. Step 6: Final answer
    x = 12,332.57

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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.