Home / 10,887.75-16,300.64-7,178.66

Finding the Fourth Proportional to 10,887.75, 16,300.64 and 7,178.66

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Solution

The fourth proportional to 10,887.75, 16,300.64 and 7,178.66 is: 10,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.75 : 16,300.64 = 7,178.66 : x
  2. Step 2: Convert to fraction form
    10,887.75/16,300.64 = 7,178.66/x
  3. Step 3: Cross multiply
    10,887.75x = 16,300.64 × 7,178.66
  4. Step 4: Simplify right side
    10,887.75x = 117,016,749.91
  5. Step 5: Solve for x
    x = 117,016,749.91/10,887.75
  6. Step 6: Final answer
    x = 10,747.56

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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.