Home / 12,225.90-18,306.00-7,759.39

Finding the Fourth Proportional to 12,225.90, 18,306.00 and 7,759.39

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Solution

The fourth proportional to 12,225.90, 18,306.00 and 7,759.39 is: 11,618.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.90 : 18,306.00 = 7,759.39 : x
  2. Step 2: Convert to fraction form
    12,225.90/18,306.00 = 7,759.39/x
  3. Step 3: Cross multiply
    12,225.90x = 18,306.00 × 7,759.39
  4. Step 4: Simplify right side
    12,225.90x = 142,043,363.15
  5. Step 5: Solve for x
    x = 142,043,363.15/12,225.90
  6. Step 6: Final answer
    x = 11,618.23

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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.