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Finding the Fourth Proportional to 12,006.70, 18,010.05 and 4,611.40

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Solution

The fourth proportional to 12,006.70, 18,010.05 and 4,611.40 is: 6,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.70 : 18,010.05 = 4,611.40 : x
  2. Step 2: Convert to fraction form
    12,006.70/18,010.05 = 4,611.40/x
  3. Step 3: Cross multiply
    12,006.70x = 18,010.05 × 4,611.40
  4. Step 4: Simplify right side
    12,006.70x = 83,051,544.57
  5. Step 5: Solve for x
    x = 83,051,544.57/12,006.70
  6. Step 6: Final answer
    x = 6,917.10

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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.