Home / 10,107.20-15,160.80-3,181.70

Finding the Fourth Proportional to 10,107.20, 15,160.80 and 3,181.70

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Solution

The fourth proportional to 10,107.20, 15,160.80 and 3,181.70 is: 4,772.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,107.20 : 15,160.80 = 3,181.70 : x
  2. Step 2: Convert to fraction form
    10,107.20/15,160.80 = 3,181.70/x
  3. Step 3: Cross multiply
    10,107.20x = 15,160.80 × 3,181.70
  4. Step 4: Simplify right side
    10,107.20x = 48,237,117.36
  5. Step 5: Solve for x
    x = 48,237,117.36/10,107.20
  6. Step 6: Final answer
    x = 4,772.55

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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.