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Finding the Fourth Proportional to 12,812.60, 19,218.90 and 9,094.70

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Solution

The fourth proportional to 12,812.60, 19,218.90 and 9,094.70 is: 13,642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.60 : 19,218.90 = 9,094.70 : x
  2. Step 2: Convert to fraction form
    12,812.60/19,218.90 = 9,094.70/x
  3. Step 3: Cross multiply
    12,812.60x = 19,218.90 × 9,094.70
  4. Step 4: Simplify right side
    12,812.60x = 174,790,129.83
  5. Step 5: Solve for x
    x = 174,790,129.83/12,812.60
  6. Step 6: Final answer
    x = 13,642.05

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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.