Home / 20,162.51-27,822.15-11,208.57

Finding the Fourth Proportional to 20,162.51, 27,822.15 and 11,208.57

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Solution

The fourth proportional to 20,162.51, 27,822.15 and 11,208.57 is: 15,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.51 : 27,822.15 = 11,208.57 : x
  2. Step 2: Convert to fraction form
    20,162.51/27,822.15 = 11,208.57/x
  3. Step 3: Cross multiply
    20,162.51x = 27,822.15 × 11,208.57
  4. Step 4: Simplify right side
    20,162.51x = 311,846,515.83
  5. Step 5: Solve for x
    x = 311,846,515.83/20,162.51
  6. Step 6: Final answer
    x = 15,466.65

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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.