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Finding the Fourth Proportional to 12,362.90, 18,544.35 and 8,211.02

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Solution

The fourth proportional to 12,362.90, 18,544.35 and 8,211.02 is: 12,316.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,362.90 : 18,544.35 = 8,211.02 : x
  2. Step 2: Convert to fraction form
    12,362.90/18,544.35 = 8,211.02/x
  3. Step 3: Cross multiply
    12,362.90x = 18,544.35 × 8,211.02
  4. Step 4: Simplify right side
    12,362.90x = 152,267,894.96
  5. Step 5: Solve for x
    x = 152,267,894.96/12,362.90
  6. Step 6: Final answer
    x = 12,316.52

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Similar ratio
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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.