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Finding the Fourth Proportional to 18,270.92, 25,211.64 and 10,312.64

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Solution

The fourth proportional to 18,270.92, 25,211.64 and 10,312.64 is: 14,230.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.92 : 25,211.64 = 10,312.64 : x
  2. Step 2: Convert to fraction form
    18,270.92/25,211.64 = 10,312.64/x
  3. Step 3: Cross multiply
    18,270.92x = 25,211.64 × 10,312.64
  4. Step 4: Simplify right side
    18,270.92x = 259,998,567.13
  5. Step 5: Solve for x
    x = 259,998,567.13/18,270.92
  6. Step 6: Final answer
    x = 14,230.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.