Home / 10,942.74-15,074.64-8,703.90

Finding the Fourth Proportional to 10,942.74, 15,074.64 and 8,703.90

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Solution

The fourth proportional to 10,942.74, 15,074.64 and 8,703.90 is: 11,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,942.74 : 15,074.64 = 8,703.90 : x
  2. Step 2: Convert to fraction form
    10,942.74/15,074.64 = 8,703.90/x
  3. Step 3: Cross multiply
    10,942.74x = 15,074.64 × 8,703.90
  4. Step 4: Simplify right side
    10,942.74x = 131,208,159.10
  5. Step 5: Solve for x
    x = 131,208,159.10/10,942.74
  6. Step 6: Final answer
    x = 11,990.43

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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.