Home / 12,209.18-16,848.80-6,620.18

Finding the Fourth Proportional to 12,209.18, 16,848.80 and 6,620.18

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Solution

The fourth proportional to 12,209.18, 16,848.80 and 6,620.18 is: 9,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.18 : 16,848.80 = 6,620.18 : x
  2. Step 2: Convert to fraction form
    12,209.18/16,848.80 = 6,620.18/x
  3. Step 3: Cross multiply
    12,209.18x = 16,848.80 × 6,620.18
  4. Step 4: Simplify right side
    12,209.18x = 111,541,971.44
  5. Step 5: Solve for x
    x = 111,541,971.44/12,209.18
  6. Step 6: Final answer
    x = 9,135.91

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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.