Home / 10,011.20-15,049.20-7,109.60

Finding the Fourth Proportional to 10,011.20, 15,049.20 and 7,109.60

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Solution

The fourth proportional to 10,011.20, 15,049.20 and 7,109.60 is: 10,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,011.20 : 15,049.20 = 7,109.60 : x
  2. Step 2: Convert to fraction form
    10,011.20/15,049.20 = 7,109.60/x
  3. Step 3: Cross multiply
    10,011.20x = 15,049.20 × 7,109.60
  4. Step 4: Simplify right side
    10,011.20x = 106,993,792.32
  5. Step 5: Solve for x
    x = 106,993,792.32/10,011.20
  6. Step 6: Final answer
    x = 10,687.41

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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.