Home / 10,942.13-16,381.35-8,143.37

Finding the Fourth Proportional to 10,942.13, 16,381.35 and 8,143.37

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Solution

The fourth proportional to 10,942.13, 16,381.35 and 8,143.37 is: 12,191.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,942.13 : 16,381.35 = 8,143.37 : x
  2. Step 2: Convert to fraction form
    10,942.13/16,381.35 = 8,143.37/x
  3. Step 3: Cross multiply
    10,942.13x = 16,381.35 × 8,143.37
  4. Step 4: Simplify right side
    10,942.13x = 133,399,312.24
  5. Step 5: Solve for x
    x = 133,399,312.24/10,942.13
  6. Step 6: Final answer
    x = 12,191.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.