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Finding the Fourth Proportional to 18,178.76, 25,067.76 and 14,395.88

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Solution

The fourth proportional to 18,178.76, 25,067.76 and 14,395.88 is: 19,851.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.76 : 25,067.76 = 14,395.88 : x
  2. Step 2: Convert to fraction form
    18,178.76/25,067.76 = 14,395.88/x
  3. Step 3: Cross multiply
    18,178.76x = 25,067.76 × 14,395.88
  4. Step 4: Simplify right side
    18,178.76x = 360,872,464.83
  5. Step 5: Solve for x
    x = 360,872,464.83/18,178.76
  6. Step 6: Final answer
    x = 19,851.32

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Half scale
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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.