Home / 20,065.23-27,689.04-11,112.57

Finding the Fourth Proportional to 20,065.23, 27,689.04 and 11,112.57

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Solution

The fourth proportional to 20,065.23, 27,689.04 and 11,112.57 is: 15,334.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.23 : 27,689.04 = 11,112.57 : x
  2. Step 2: Convert to fraction form
    20,065.23/27,689.04 = 11,112.57/x
  3. Step 3: Cross multiply
    20,065.23x = 27,689.04 × 11,112.57
  4. Step 4: Simplify right side
    20,065.23x = 307,696,395.23
  5. Step 5: Solve for x
    x = 307,696,395.23/20,065.23
  6. Step 6: Final answer
    x = 15,334.81

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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.