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Finding the Fourth Proportional to 18,145.92, 25,040.10 and 10,186.20

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Solution

The fourth proportional to 18,145.92, 25,040.10 and 10,186.20 is: 14,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.92 : 25,040.10 = 10,186.20 : x
  2. Step 2: Convert to fraction form
    18,145.92/25,040.10 = 10,186.20/x
  3. Step 3: Cross multiply
    18,145.92x = 25,040.10 × 10,186.20
  4. Step 4: Simplify right side
    18,145.92x = 255,063,466.62
  5. Step 5: Solve for x
    x = 255,063,466.62/18,145.92
  6. Step 6: Final answer
    x = 14,056.24

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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.