Home / 20,188.23-27,859.36-11,235.65

Finding the Fourth Proportional to 20,188.23, 27,859.36 and 11,235.65

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Solution

The fourth proportional to 20,188.23, 27,859.36 and 11,235.65 is: 15,504.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.23 : 27,859.36 = 11,235.65 : x
  2. Step 2: Convert to fraction form
    20,188.23/27,859.36 = 11,235.65/x
  3. Step 3: Cross multiply
    20,188.23x = 27,859.36 × 11,235.65
  4. Step 4: Simplify right side
    20,188.23x = 313,018,018.18
  5. Step 5: Solve for x
    x = 313,018,018.18/20,188.23
  6. Step 6: Final answer
    x = 15,504.98

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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.