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Finding the Fourth Proportional to 23,121, 34,660.68 and 8,319.51

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Solution

The fourth proportional to 23,121, 34,660.68 and 8,319.51 is: 12,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121 : 34,660.68 = 8,319.51 : x
  2. Step 2: Convert to fraction form
    23,121/34,660.68 = 8,319.51/x
  3. Step 3: Cross multiply
    23,121x = 34,660.68 × 8,319.51
  4. Step 4: Simplify right side
    23,121x = 288,359,873.87
  5. Step 5: Solve for x
    x = 288,359,873.87/23,121
  6. Step 6: Final answer
    x = 12,471.77

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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.