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Finding the Fourth Proportional to 17,280.60, 25,856.10 and 11,448.60

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Solution

The fourth proportional to 17,280.60, 25,856.10 and 11,448.60 is: 17,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,280.60 : 25,856.10 = 11,448.60 : x
  2. Step 2: Convert to fraction form
    17,280.60/25,856.10 = 11,448.60/x
  3. Step 3: Cross multiply
    17,280.60x = 25,856.10 × 11,448.60
  4. Step 4: Simplify right side
    17,280.60x = 296,016,146.46
  5. Step 5: Solve for x
    x = 296,016,146.46/17,280.60
  6. Step 6: Final answer
    x = 17,129.97

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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.