Home / 10,215.49-15,318.19-5,999.80

Finding the Fourth Proportional to 10,215.49, 15,318.19 and 5,999.80

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Solution

The fourth proportional to 10,215.49, 15,318.19 and 5,999.80 is: 8,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.49 : 15,318.19 = 5,999.80 : x
  2. Step 2: Convert to fraction form
    10,215.49/15,318.19 = 5,999.80/x
  3. Step 3: Cross multiply
    10,215.49x = 15,318.19 × 5,999.80
  4. Step 4: Simplify right side
    10,215.49x = 91,906,076.36
  5. Step 5: Solve for x
    x = 91,906,076.36/10,215.49
  6. Step 6: Final answer
    x = 8,996.74

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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.