Home / 20,168.10-27,806.79-17,140.32

Finding the Fourth Proportional to 20,168.10, 27,806.79 and 17,140.32

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Solution

The fourth proportional to 20,168.10, 27,806.79 and 17,140.32 is: 23,632.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.10 : 27,806.79 = 17,140.32 : x
  2. Step 2: Convert to fraction form
    20,168.10/27,806.79 = 17,140.32/x
  3. Step 3: Cross multiply
    20,168.10x = 27,806.79 × 17,140.32
  4. Step 4: Simplify right side
    20,168.10x = 476,617,278.77
  5. Step 5: Solve for x
    x = 476,617,278.77/20,168.10
  6. Step 6: Final answer
    x = 23,632.24

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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.