Home / 11,887.28-16,404.36-7,174.16

Finding the Fourth Proportional to 11,887.28, 16,404.36 and 7,174.16

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Solution

The fourth proportional to 11,887.28, 16,404.36 and 7,174.16 is: 9,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.28 : 16,404.36 = 7,174.16 : x
  2. Step 2: Convert to fraction form
    11,887.28/16,404.36 = 7,174.16/x
  3. Step 3: Cross multiply
    11,887.28x = 16,404.36 × 7,174.16
  4. Step 4: Simplify right side
    11,887.28x = 117,687,503.34
  5. Step 5: Solve for x
    x = 117,687,503.34/11,887.28
  6. Step 6: Final answer
    x = 9,900.29

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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.