Home / 10,987.95-15,163.81-6,208.95

Finding the Fourth Proportional to 10,987.95, 15,163.81 and 6,208.95

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Solution

The fourth proportional to 10,987.95, 15,163.81 and 6,208.95 is: 8,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.95 : 15,163.81 = 6,208.95 : x
  2. Step 2: Convert to fraction form
    10,987.95/15,163.81 = 6,208.95/x
  3. Step 3: Cross multiply
    10,987.95x = 15,163.81 × 6,208.95
  4. Step 4: Simplify right side
    10,987.95x = 94,151,379.44
  5. Step 5: Solve for x
    x = 94,151,379.44/10,987.95
  6. Step 6: Final answer
    x = 8,568.60

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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.