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Finding the Fourth Proportional to 18,105.75, 24,986.00 and 10,557.29

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Solution

The fourth proportional to 18,105.75, 24,986.00 and 10,557.29 is: 14,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.75 : 24,986.00 = 10,557.29 : x
  2. Step 2: Convert to fraction form
    18,105.75/24,986.00 = 10,557.29/x
  3. Step 3: Cross multiply
    18,105.75x = 24,986.00 × 10,557.29
  4. Step 4: Simplify right side
    18,105.75x = 263,784,536.80
  5. Step 5: Solve for x
    x = 263,784,536.80/18,105.75
  6. Step 6: Final answer
    x = 14,569.10

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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.