Home / 10,142.44-15,214.62-3,985

Finding the Fourth Proportional to 10,142.44, 15,214.62 and 3,985

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Solution

The fourth proportional to 10,142.44, 15,214.62 and 3,985 is: 5,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.44 : 15,214.62 = 3,985 : x
  2. Step 2: Convert to fraction form
    10,142.44/15,214.62 = 3,985/x
  3. Step 3: Cross multiply
    10,142.44x = 15,214.62 × 3,985
  4. Step 4: Simplify right side
    10,142.44x = 60,630,260.70
  5. Step 5: Solve for x
    x = 60,630,260.70/10,142.44
  6. Step 6: Final answer
    x = 5,977.88

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1.5x scale

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.