Home / 11,321.88-15,622.38-7,127.16

Finding the Fourth Proportional to 11,321.88, 15,622.38 and 7,127.16

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Solution

The fourth proportional to 11,321.88, 15,622.38 and 7,127.16 is: 9,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.88 : 15,622.38 = 7,127.16 : x
  2. Step 2: Convert to fraction form
    11,321.88/15,622.38 = 7,127.16/x
  3. Step 3: Cross multiply
    11,321.88x = 15,622.38 × 7,127.16
  4. Step 4: Simplify right side
    11,321.88x = 111,343,201.84
  5. Step 5: Solve for x
    x = 111,343,201.84/11,321.88
  6. Step 6: Final answer
    x = 9,834.34

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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.