Home / 20,142.66-27,794.97-18,656.58

Finding the Fourth Proportional to 20,142.66, 27,794.97 and 18,656.58

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Solution

The fourth proportional to 20,142.66, 27,794.97 and 18,656.58 is: 25,744.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.66 : 27,794.97 = 18,656.58 : x
  2. Step 2: Convert to fraction form
    20,142.66/27,794.97 = 18,656.58/x
  3. Step 3: Cross multiply
    20,142.66x = 27,794.97 × 18,656.58
  4. Step 4: Simplify right side
    20,142.66x = 518,559,081.40
  5. Step 5: Solve for x
    x = 518,559,081.40/20,142.66
  6. Step 6: Final answer
    x = 25,744.32

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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.