Home / 20,085.65-27,719.84-11,135.81

Finding the Fourth Proportional to 20,085.65, 27,719.84 and 11,135.81

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Solution

The fourth proportional to 20,085.65, 27,719.84 and 11,135.81 is: 15,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.65 : 27,719.84 = 11,135.81 : x
  2. Step 2: Convert to fraction form
    20,085.65/27,719.84 = 11,135.81/x
  3. Step 3: Cross multiply
    20,085.65x = 27,719.84 × 11,135.81
  4. Step 4: Simplify right side
    20,085.65x = 308,682,677.19
  5. Step 5: Solve for x
    x = 308,682,677.19/20,085.65
  6. Step 6: Final answer
    x = 15,368.32

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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.