Home / 12,211.82-18,289.24-8,916.74

Finding the Fourth Proportional to 12,211.82, 18,289.24 and 8,916.74

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Solution

The fourth proportional to 12,211.82, 18,289.24 and 8,916.74 is: 13,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.82 : 18,289.24 = 8,916.74 : x
  2. Step 2: Convert to fraction form
    12,211.82/18,289.24 = 8,916.74/x
  3. Step 3: Cross multiply
    12,211.82x = 18,289.24 × 8,916.74
  4. Step 4: Simplify right side
    12,211.82x = 163,080,352.15
  5. Step 5: Solve for x
    x = 163,080,352.15/12,211.82
  6. Step 6: Final answer
    x = 13,354.31

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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.