Home / 20,162.37-27,822.80-11,209.71

Finding the Fourth Proportional to 20,162.37, 27,822.80 and 11,209.71

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Solution

The fourth proportional to 20,162.37, 27,822.80 and 11,209.71 is: 15,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.37 : 27,822.80 = 11,209.71 : x
  2. Step 2: Convert to fraction form
    20,162.37/27,822.80 = 11,209.71/x
  3. Step 3: Cross multiply
    20,162.37x = 27,822.80 × 11,209.71
  4. Step 4: Simplify right side
    20,162.37x = 311,885,463.34
  5. Step 5: Solve for x
    x = 311,885,463.34/20,162.37
  6. Step 6: Final answer
    x = 15,468.69

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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.