Home / 12,211.08-16,841.70-8,435.70

Finding the Fourth Proportional to 12,211.08, 16,841.70 and 8,435.70

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Solution

The fourth proportional to 12,211.08, 16,841.70 and 8,435.70 is: 11,634.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.08 : 16,841.70 = 8,435.70 : x
  2. Step 2: Convert to fraction form
    12,211.08/16,841.70 = 8,435.70/x
  3. Step 3: Cross multiply
    12,211.08x = 16,841.70 × 8,435.70
  4. Step 4: Simplify right side
    12,211.08x = 142,071,528.69
  5. Step 5: Solve for x
    x = 142,071,528.69/12,211.08
  6. Step 6: Final answer
    x = 11,634.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.