Home / 12,224.80-16,870.35-7,121.62

Finding the Fourth Proportional to 12,224.80, 16,870.35 and 7,121.62

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Solution

The fourth proportional to 12,224.80, 16,870.35 and 7,121.62 is: 9,827.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,224.80 : 16,870.35 = 7,121.62 : x
  2. Step 2: Convert to fraction form
    12,224.80/16,870.35 = 7,121.62/x
  3. Step 3: Cross multiply
    12,224.80x = 16,870.35 × 7,121.62
  4. Step 4: Simplify right side
    12,224.80x = 120,144,221.97
  5. Step 5: Solve for x
    x = 120,144,221.97/12,224.80
  6. Step 6: Final answer
    x = 9,827.91

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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.