Home / 10,987.75-15,163.10-6,272.16

Finding the Fourth Proportional to 10,987.75, 15,163.10 and 6,272.16

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Solution

The fourth proportional to 10,987.75, 15,163.10 and 6,272.16 is: 8,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.75 : 15,163.10 = 6,272.16 : x
  2. Step 2: Convert to fraction form
    10,987.75/15,163.10 = 6,272.16/x
  3. Step 3: Cross multiply
    10,987.75x = 15,163.10 × 6,272.16
  4. Step 4: Simplify right side
    10,987.75x = 95,105,389.30
  5. Step 5: Solve for x
    x = 95,105,389.30/10,987.75
  6. Step 6: Final answer
    x = 8,655.58

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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.