Home / 15,209.92-20,983.84-11,240.64

Finding the Fourth Proportional to 15,209.92, 20,983.84 and 11,240.64

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Solution

The fourth proportional to 15,209.92, 20,983.84 and 11,240.64 is: 15,507.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.92 : 20,983.84 = 11,240.64 : x
  2. Step 2: Convert to fraction form
    15,209.92/20,983.84 = 11,240.64/x
  3. Step 3: Cross multiply
    15,209.92x = 20,983.84 × 11,240.64
  4. Step 4: Simplify right side
    15,209.92x = 235,871,791.26
  5. Step 5: Solve for x
    x = 235,871,791.26/15,209.92
  6. Step 6: Final answer
    x = 15,507.76

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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.