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Finding the Fourth Proportional to 18,339.35, 25,308.90 and 10,381.41

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Solution

The fourth proportional to 18,339.35, 25,308.90 and 10,381.41 is: 14,326.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.35 : 25,308.90 = 10,381.41 : x
  2. Step 2: Convert to fraction form
    18,339.35/25,308.90 = 10,381.41/x
  3. Step 3: Cross multiply
    18,339.35x = 25,308.90 × 10,381.41
  4. Step 4: Simplify right side
    18,339.35x = 262,742,067.55
  5. Step 5: Solve for x
    x = 262,742,067.55/18,339.35
  6. Step 6: Final answer
    x = 14,326.69

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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.