Home / 12,148.12-18,255.12-6,605.56

Finding the Fourth Proportional to 12,148.12, 18,255.12 and 6,605.56

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Solution

The fourth proportional to 12,148.12, 18,255.12 and 6,605.56 is: 9,926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.12 : 18,255.12 = 6,605.56 : x
  2. Step 2: Convert to fraction form
    12,148.12/18,255.12 = 6,605.56/x
  3. Step 3: Cross multiply
    12,148.12x = 18,255.12 × 6,605.56
  4. Step 4: Simplify right side
    12,148.12x = 120,585,290.47
  5. Step 5: Solve for x
    x = 120,585,290.47/12,148.12
  6. Step 6: Final answer
    x = 9,926.25

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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.