Home / 12,209.19-16,848.69-6,620.19

Finding the Fourth Proportional to 12,209.19, 16,848.69 and 6,620.19

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Solution

The fourth proportional to 12,209.19, 16,848.69 and 6,620.19 is: 9,135.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.19 : 16,848.69 = 6,620.19 : x
  2. Step 2: Convert to fraction form
    12,209.19/16,848.69 = 6,620.19/x
  3. Step 3: Cross multiply
    12,209.19x = 16,848.69 × 6,620.19
  4. Step 4: Simplify right side
    12,209.19x = 111,541,462.10
  5. Step 5: Solve for x
    x = 111,541,462.10/12,209.19
  6. Step 6: Final answer
    x = 9,135.86

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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.