Home / 18,942.75-26,143.20-10,985.22

Finding the Fourth Proportional to 18,942.75, 26,143.20 and 10,985.22

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Solution

The fourth proportional to 18,942.75, 26,143.20 and 10,985.22 is: 15,160.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.75 : 26,143.20 = 10,985.22 : x
  2. Step 2: Convert to fraction form
    18,942.75/26,143.20 = 10,985.22/x
  3. Step 3: Cross multiply
    18,942.75x = 26,143.20 × 10,985.22
  4. Step 4: Simplify right side
    18,942.75x = 287,188,803.50
  5. Step 5: Solve for x
    x = 287,188,803.50/18,942.75
  6. Step 6: Final answer
    x = 15,160.88

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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.