Home / 10,965.09-15,130.66-6,489.03

Finding the Fourth Proportional to 10,965.09, 15,130.66 and 6,489.03

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Solution

The fourth proportional to 10,965.09, 15,130.66 and 6,489.03 is: 8,954.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.09 : 15,130.66 = 6,489.03 : x
  2. Step 2: Convert to fraction form
    10,965.09/15,130.66 = 6,489.03/x
  3. Step 3: Cross multiply
    10,965.09x = 15,130.66 × 6,489.03
  4. Step 4: Simplify right side
    10,965.09x = 98,183,306.66
  5. Step 5: Solve for x
    x = 98,183,306.66/10,965.09
  6. Step 6: Final answer
    x = 8,954.17

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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.