Home / 20,191.24-27,862.86-11,238.40

Finding the Fourth Proportional to 20,191.24, 27,862.86 and 11,238.40

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Solution

The fourth proportional to 20,191.24, 27,862.86 and 11,238.40 is: 15,508.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.24 : 27,862.86 = 11,238.40 : x
  2. Step 2: Convert to fraction form
    20,191.24/27,862.86 = 11,238.40/x
  3. Step 3: Cross multiply
    20,191.24x = 27,862.86 × 11,238.40
  4. Step 4: Simplify right side
    20,191.24x = 313,133,965.82
  5. Step 5: Solve for x
    x = 313,133,965.82/20,191.24
  6. Step 6: Final answer
    x = 15,508.41

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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.