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Finding the Fourth Proportional to 12,363.15, 18,549.05 and 8,219.55

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Solution

The fourth proportional to 12,363.15, 18,549.05 and 8,219.55 is: 12,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.15 : 18,549.05 = 8,219.55 : x
  2. Step 2: Convert to fraction form
    12,363.15/18,549.05 = 8,219.55/x
  3. Step 3: Cross multiply
    12,363.15x = 18,549.05 × 8,219.55
  4. Step 4: Simplify right side
    12,363.15x = 152,464,802.83
  5. Step 5: Solve for x
    x = 152,464,802.83/12,363.15
  6. Step 6: Final answer
    x = 12,332.20

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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.