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Finding the Fourth Proportional to 18,245.57, 25,178.81 and 9,862.07

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Solution

The fourth proportional to 18,245.57, 25,178.81 and 9,862.07 is: 13,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.57 : 25,178.81 = 9,862.07 : x
  2. Step 2: Convert to fraction form
    18,245.57/25,178.81 = 9,862.07/x
  3. Step 3: Cross multiply
    18,245.57x = 25,178.81 × 9,862.07
  4. Step 4: Simplify right side
    18,245.57x = 248,315,011.53
  5. Step 5: Solve for x
    x = 248,315,011.53/18,245.57
  6. Step 6: Final answer
    x = 13,609.61

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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.