Home / 18,220.10-25,143.28-10,261.85

Finding the Fourth Proportional to 18,220.10, 25,143.28 and 10,261.85

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Solution

The fourth proportional to 18,220.10, 25,143.28 and 10,261.85 is: 14,161.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.10 : 25,143.28 = 10,261.85 : x
  2. Step 2: Convert to fraction form
    18,220.10/25,143.28 = 10,261.85/x
  3. Step 3: Cross multiply
    18,220.10x = 25,143.28 × 10,261.85
  4. Step 4: Simplify right side
    18,220.10x = 258,016,416.50
  5. Step 5: Solve for x
    x = 258,016,416.50/18,220.10
  6. Step 6: Final answer
    x = 14,161.09

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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.