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Finding the Fourth Proportional to 15,409.70, 23,114.55 and 12,817.70

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Solution

The fourth proportional to 15,409.70, 23,114.55 and 12,817.70 is: 19,226.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.70 : 23,114.55 = 12,817.70 : x
  2. Step 2: Convert to fraction form
    15,409.70/23,114.55 = 12,817.70/x
  3. Step 3: Cross multiply
    15,409.70x = 23,114.55 × 12,817.70
  4. Step 4: Simplify right side
    15,409.70x = 296,275,367.54
  5. Step 5: Solve for x
    x = 296,275,367.54/15,409.70
  6. Step 6: Final answer
    x = 19,226.55

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Half scale
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Double scale
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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.