Home / 10,986.06-15,153.96-7,209.48

Finding the Fourth Proportional to 10,986.06, 15,153.96 and 7,209.48

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Solution

The fourth proportional to 10,986.06, 15,153.96 and 7,209.48 is: 9,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.06 : 15,153.96 = 7,209.48 : x
  2. Step 2: Convert to fraction form
    10,986.06/15,153.96 = 7,209.48/x
  3. Step 3: Cross multiply
    10,986.06x = 15,153.96 × 7,209.48
  4. Step 4: Simplify right side
    10,986.06x = 109,252,171.54
  5. Step 5: Solve for x
    x = 109,252,171.54/10,986.06
  6. Step 6: Final answer
    x = 9,944.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.