Home / 12,642.35-18,963.52-4,322.43

Finding the Fourth Proportional to 12,642.35, 18,963.52 and 4,322.43

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Solution

The fourth proportional to 12,642.35, 18,963.52 and 4,322.43 is: 6,483.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.35 : 18,963.52 = 4,322.43 : x
  2. Step 2: Convert to fraction form
    12,642.35/18,963.52 = 4,322.43/x
  3. Step 3: Cross multiply
    12,642.35x = 18,963.52 × 4,322.43
  4. Step 4: Simplify right side
    12,642.35x = 81,968,476.95
  5. Step 5: Solve for x
    x = 81,968,476.95/12,642.35
  6. Step 6: Final answer
    x = 6,483.65

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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.