Home / 10,965.80-16,448.70-7,685.30

Finding the Fourth Proportional to 10,965.80, 16,448.70 and 7,685.30

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Solution

The fourth proportional to 10,965.80, 16,448.70 and 7,685.30 is: 11,527.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.80 : 16,448.70 = 7,685.30 : x
  2. Step 2: Convert to fraction form
    10,965.80/16,448.70 = 7,685.30/x
  3. Step 3: Cross multiply
    10,965.80x = 16,448.70 × 7,685.30
  4. Step 4: Simplify right side
    10,965.80x = 126,413,194.11
  5. Step 5: Solve for x
    x = 126,413,194.11/10,965.80
  6. Step 6: Final answer
    x = 11,527.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.