Home / 14,221.80-21,339.10-6,426.60

Finding the Fourth Proportional to 14,221.80, 21,339.10 and 6,426.60

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Solution

The fourth proportional to 14,221.80, 21,339.10 and 6,426.60 is: 9,642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.80 : 21,339.10 = 6,426.60 : x
  2. Step 2: Convert to fraction form
    14,221.80/21,339.10 = 6,426.60/x
  3. Step 3: Cross multiply
    14,221.80x = 21,339.10 × 6,426.60
  4. Step 4: Simplify right side
    14,221.80x = 137,137,860.06
  5. Step 5: Solve for x
    x = 137,137,860.06/14,221.80
  6. Step 6: Final answer
    x = 9,642.79

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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.