Home / 12,211.60-18,320.10-5,636.20

Finding the Fourth Proportional to 12,211.60, 18,320.10 and 5,636.20

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Solution

The fourth proportional to 12,211.60, 18,320.10 and 5,636.20 is: 8,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.60 : 18,320.10 = 5,636.20 : x
  2. Step 2: Convert to fraction form
    12,211.60/18,320.10 = 5,636.20/x
  3. Step 3: Cross multiply
    12,211.60x = 18,320.10 × 5,636.20
  4. Step 4: Simplify right side
    12,211.60x = 103,255,747.62
  5. Step 5: Solve for x
    x = 103,255,747.62/12,211.60
  6. Step 6: Final answer
    x = 8,455.55

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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.