Home / 12,219.80-16,863.36-6,630.80

Finding the Fourth Proportional to 12,219.80, 16,863.36 and 6,630.80

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Solution

The fourth proportional to 12,219.80, 16,863.36 and 6,630.80 is: 9,150.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.80 : 16,863.36 = 6,630.80 : x
  2. Step 2: Convert to fraction form
    12,219.80/16,863.36 = 6,630.80/x
  3. Step 3: Cross multiply
    12,219.80x = 16,863.36 × 6,630.80
  4. Step 4: Simplify right side
    12,219.80x = 111,817,567.49
  5. Step 5: Solve for x
    x = 111,817,567.49/12,219.80
  6. Step 6: Final answer
    x = 9,150.52

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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.