Home / 12,491.01-17,237.57-7,186.87

Finding the Fourth Proportional to 12,491.01, 17,237.57 and 7,186.87

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Solution

The fourth proportional to 12,491.01, 17,237.57 and 7,186.87 is: 9,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.01 : 17,237.57 = 7,186.87 : x
  2. Step 2: Convert to fraction form
    12,491.01/17,237.57 = 7,186.87/x
  3. Step 3: Cross multiply
    12,491.01x = 17,237.57 × 7,186.87
  4. Step 4: Simplify right side
    12,491.01x = 123,884,138.77
  5. Step 5: Solve for x
    x = 123,884,138.77/12,491.01
  6. Step 6: Final answer
    x = 9,917.86

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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.