Home / 10,685.09-15,999.64-6,976.91

Finding the Fourth Proportional to 10,685.09, 15,999.64 and 6,976.91

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Solution

The fourth proportional to 10,685.09, 15,999.64 and 6,976.91 is: 10,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,685.09 : 15,999.64 = 6,976.91 : x
  2. Step 2: Convert to fraction form
    10,685.09/15,999.64 = 6,976.91/x
  3. Step 3: Cross multiply
    10,685.09x = 15,999.64 × 6,976.91
  4. Step 4: Simplify right side
    10,685.09x = 111,628,048.31
  5. Step 5: Solve for x
    x = 111,628,048.31/10,685.09
  6. Step 6: Final answer
    x = 10,447.09

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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.