Home / 12,211.53-18,281.25-9,105.18

Finding the Fourth Proportional to 12,211.53, 18,281.25 and 9,105.18

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Solution

The fourth proportional to 12,211.53, 18,281.25 and 9,105.18 is: 13,630.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.53 : 18,281.25 = 9,105.18 : x
  2. Step 2: Convert to fraction form
    12,211.53/18,281.25 = 9,105.18/x
  3. Step 3: Cross multiply
    12,211.53x = 18,281.25 × 9,105.18
  4. Step 4: Simplify right side
    12,211.53x = 166,454,071.88
  5. Step 5: Solve for x
    x = 166,454,071.88/12,211.53
  6. Step 6: Final answer
    x = 13,630.89

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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.