Home / 10,181.28-15,271.90-2,785.44

Finding the Fourth Proportional to 10,181.28, 15,271.90 and 2,785.44

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Solution

The fourth proportional to 10,181.28, 15,271.90 and 2,785.44 is: 4,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,181.28 : 15,271.90 = 2,785.44 : x
  2. Step 2: Convert to fraction form
    10,181.28/15,271.90 = 2,785.44/x
  3. Step 3: Cross multiply
    10,181.28x = 15,271.90 × 2,785.44
  4. Step 4: Simplify right side
    10,181.28x = 42,538,961.14
  5. Step 5: Solve for x
    x = 42,538,961.14/10,181.28
  6. Step 6: Final answer
    x = 4,178.15

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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.