Home / 20,223.36-27,909.12-11,271.36

Finding the Fourth Proportional to 20,223.36, 27,909.12 and 11,271.36

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Solution

The fourth proportional to 20,223.36, 27,909.12 and 11,271.36 is: 15,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.36 : 27,909.12 = 11,271.36 : x
  2. Step 2: Convert to fraction form
    20,223.36/27,909.12 = 11,271.36/x
  3. Step 3: Cross multiply
    20,223.36x = 27,909.12 × 11,271.36
  4. Step 4: Simplify right side
    20,223.36x = 314,573,738.80
  5. Step 5: Solve for x
    x = 314,573,738.80/20,223.36
  6. Step 6: Final answer
    x = 15,554.97

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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.