Home / 20,155.19-27,814.23-11,081.25

Finding the Fourth Proportional to 20,155.19, 27,814.23 and 11,081.25

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Solution

The fourth proportional to 20,155.19, 27,814.23 and 11,081.25 is: 15,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.19 : 27,814.23 = 11,081.25 : x
  2. Step 2: Convert to fraction form
    20,155.19/27,814.23 = 11,081.25/x
  3. Step 3: Cross multiply
    20,155.19x = 27,814.23 × 11,081.25
  4. Step 4: Simplify right side
    20,155.19x = 308,216,436.19
  5. Step 5: Solve for x
    x = 308,216,436.19/20,155.19
  6. Step 6: Final answer
    x = 15,292.17

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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.