Home / 12,211.16-18,280.69-9,104.81

Finding the Fourth Proportional to 12,211.16, 18,280.69 and 9,104.81

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Solution

The fourth proportional to 12,211.16, 18,280.69 and 9,104.81 is: 13,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.16 : 18,280.69 = 9,104.81 : x
  2. Step 2: Convert to fraction form
    12,211.16/18,280.69 = 9,104.81/x
  3. Step 3: Cross multiply
    12,211.16x = 18,280.69 × 9,104.81
  4. Step 4: Simplify right side
    12,211.16x = 166,442,094.95
  5. Step 5: Solve for x
    x = 166,442,094.95/12,211.16
  6. Step 6: Final answer
    x = 13,630.33

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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.