Home / 12,211.30-16,851.58-6,622.30

Finding the Fourth Proportional to 12,211.30, 16,851.58 and 6,622.30

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Solution

The fourth proportional to 12,211.30, 16,851.58 and 6,622.30 is: 9,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.30 : 16,851.58 = 6,622.30 : x
  2. Step 2: Convert to fraction form
    12,211.30/16,851.58 = 6,622.30/x
  3. Step 3: Cross multiply
    12,211.30x = 16,851.58 × 6,622.30
  4. Step 4: Simplify right side
    12,211.30x = 111,596,218.23
  5. Step 5: Solve for x
    x = 111,596,218.23/12,211.30
  6. Step 6: Final answer
    x = 9,138.77

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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.