Home / 12,222.60-18,333.90-7,289.70

Finding the Fourth Proportional to 12,222.60, 18,333.90 and 7,289.70

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Solution

The fourth proportional to 12,222.60, 18,333.90 and 7,289.70 is: 10,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.60 : 18,333.90 = 7,289.70 : x
  2. Step 2: Convert to fraction form
    12,222.60/18,333.90 = 7,289.70/x
  3. Step 3: Cross multiply
    12,222.60x = 18,333.90 × 7,289.70
  4. Step 4: Simplify right side
    12,222.60x = 133,648,630.83
  5. Step 5: Solve for x
    x = 133,648,630.83/12,222.60
  6. Step 6: Final answer
    x = 10,934.55

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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.