Home / 10,940.47-15,082.10-7,791.19

Finding the Fourth Proportional to 10,940.47, 15,082.10 and 7,791.19

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Solution

The fourth proportional to 10,940.47, 15,082.10 and 7,791.19 is: 10,740.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.47 : 15,082.10 = 7,791.19 : x
  2. Step 2: Convert to fraction form
    10,940.47/15,082.10 = 7,791.19/x
  3. Step 3: Cross multiply
    10,940.47x = 15,082.10 × 7,791.19
  4. Step 4: Simplify right side
    10,940.47x = 117,507,459.25
  5. Step 5: Solve for x
    x = 117,507,459.25/10,940.47
  6. Step 6: Final answer
    x = 10,740.63

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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.