Home / 10,969.37-15,126.68-8,287.19

Finding the Fourth Proportional to 10,969.37, 15,126.68 and 8,287.19

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Solution

The fourth proportional to 10,969.37, 15,126.68 and 8,287.19 is: 11,427.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.37 : 15,126.68 = 8,287.19 : x
  2. Step 2: Convert to fraction form
    10,969.37/15,126.68 = 8,287.19/x
  3. Step 3: Cross multiply
    10,969.37x = 15,126.68 × 8,287.19
  4. Step 4: Simplify right side
    10,969.37x = 125,357,629.79
  5. Step 5: Solve for x
    x = 125,357,629.79/10,969.37
  6. Step 6: Final answer
    x = 11,427.97

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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.