Home / 10,178.78-15,270.35-3,158.64

Finding the Fourth Proportional to 10,178.78, 15,270.35 and 3,158.64

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Solution

The fourth proportional to 10,178.78, 15,270.35 and 3,158.64 is: 4,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,178.78 : 15,270.35 = 3,158.64 : x
  2. Step 2: Convert to fraction form
    10,178.78/15,270.35 = 3,158.64/x
  3. Step 3: Cross multiply
    10,178.78x = 15,270.35 × 3,158.64
  4. Step 4: Simplify right side
    10,178.78x = 48,233,538.32
  5. Step 5: Solve for x
    x = 48,233,538.32/10,178.78
  6. Step 6: Final answer
    x = 4,738.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.