Home / 12,543.39-18,816.03-4,223.43

Finding the Fourth Proportional to 12,543.39, 18,816.03 and 4,223.43

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Solution

The fourth proportional to 12,543.39, 18,816.03 and 4,223.43 is: 6,335.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.39 : 18,816.03 = 4,223.43 : x
  2. Step 2: Convert to fraction form
    12,543.39/18,816.03 = 4,223.43/x
  3. Step 3: Cross multiply
    12,543.39x = 18,816.03 × 4,223.43
  4. Step 4: Simplify right side
    12,543.39x = 79,468,185.58
  5. Step 5: Solve for x
    x = 79,468,185.58/12,543.39
  6. Step 6: Final answer
    x = 6,335.46

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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.