Home / 11,491.92-15,860.57-7,018.25

Finding the Fourth Proportional to 11,491.92, 15,860.57 and 7,018.25

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Solution

The fourth proportional to 11,491.92, 15,860.57 and 7,018.25 is: 9,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.92 : 15,860.57 = 7,018.25 : x
  2. Step 2: Convert to fraction form
    11,491.92/15,860.57 = 7,018.25/x
  3. Step 3: Cross multiply
    11,491.92x = 15,860.57 × 7,018.25
  4. Step 4: Simplify right side
    11,491.92x = 111,313,331.01
  5. Step 5: Solve for x
    x = 111,313,331.01/11,491.92
  6. Step 6: Final answer
    x = 9,686.23

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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.