Home / 21,426.12-32,138.64-6,634.44

Finding the Fourth Proportional to 21,426.12, 32,138.64 and 6,634.44

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Solution

The fourth proportional to 21,426.12, 32,138.64 and 6,634.44 is: 9,951.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.12 : 32,138.64 = 6,634.44 : x
  2. Step 2: Convert to fraction form
    21,426.12/32,138.64 = 6,634.44/x
  3. Step 3: Cross multiply
    21,426.12x = 32,138.64 × 6,634.44
  4. Step 4: Simplify right side
    21,426.12x = 213,221,878.76
  5. Step 5: Solve for x
    x = 213,221,878.76/21,426.12
  6. Step 6: Final answer
    x = 9,951.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.