Home / 11,172.45-15,425.20-6,928.02

Finding the Fourth Proportional to 11,172.45, 15,425.20 and 6,928.02

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Solution

The fourth proportional to 11,172.45, 15,425.20 and 6,928.02 is: 9,565.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.45 : 15,425.20 = 6,928.02 : x
  2. Step 2: Convert to fraction form
    11,172.45/15,425.20 = 6,928.02/x
  3. Step 3: Cross multiply
    11,172.45x = 15,425.20 × 6,928.02
  4. Step 4: Simplify right side
    11,172.45x = 106,866,094.10
  5. Step 5: Solve for x
    x = 106,866,094.10/11,172.45
  6. Step 6: Final answer
    x = 9,565.14

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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.