Home / 11,143.04-15,375.36-6,425.60

Finding the Fourth Proportional to 11,143.04, 15,375.36 and 6,425.60

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Solution

The fourth proportional to 11,143.04, 15,375.36 and 6,425.60 is: 8,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.04 : 15,375.36 = 6,425.60 : x
  2. Step 2: Convert to fraction form
    11,143.04/15,375.36 = 6,425.60/x
  3. Step 3: Cross multiply
    11,143.04x = 15,375.36 × 6,425.60
  4. Step 4: Simplify right side
    11,143.04x = 98,795,913.22
  5. Step 5: Solve for x
    x = 98,795,913.22/11,143.04
  6. Step 6: Final answer
    x = 8,866.15

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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.