Home / 12,211.20-18,316.80-4,811.63

Finding the Fourth Proportional to 12,211.20, 18,316.80 and 4,811.63

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Solution

The fourth proportional to 12,211.20, 18,316.80 and 4,811.63 is: 7,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.20 : 18,316.80 = 4,811.63 : x
  2. Step 2: Convert to fraction form
    12,211.20/18,316.80 = 4,811.63/x
  3. Step 3: Cross multiply
    12,211.20x = 18,316.80 × 4,811.63
  4. Step 4: Simplify right side
    12,211.20x = 88,133,664.38
  5. Step 5: Solve for x
    x = 88,133,664.38/12,211.20
  6. Step 6: Final answer
    x = 7,217.45

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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.