Home / 10,990.38-16,485.59-5,151.09

Finding the Fourth Proportional to 10,990.38, 16,485.59 and 5,151.09

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Solution

The fourth proportional to 10,990.38, 16,485.59 and 5,151.09 is: 7,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.38 : 16,485.59 = 5,151.09 : x
  2. Step 2: Convert to fraction form
    10,990.38/16,485.59 = 5,151.09/x
  3. Step 3: Cross multiply
    10,990.38x = 16,485.59 × 5,151.09
  4. Step 4: Simplify right side
    10,990.38x = 84,918,757.79
  5. Step 5: Solve for x
    x = 84,918,757.79/10,990.38
  6. Step 6: Final answer
    x = 7,726.64

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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.