Home / 22,747.56-31,379.64-15,661.68

Finding the Fourth Proportional to 22,747.56, 31,379.64 and 15,661.68

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Solution

The fourth proportional to 22,747.56, 31,379.64 and 15,661.68 is: 21,604.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,747.56 : 31,379.64 = 15,661.68 : x
  2. Step 2: Convert to fraction form
    22,747.56/31,379.64 = 15,661.68/x
  3. Step 3: Cross multiply
    22,747.56x = 31,379.64 × 15,661.68
  4. Step 4: Simplify right side
    22,747.56x = 491,457,880.20
  5. Step 5: Solve for x
    x = 491,457,880.20/22,747.56
  6. Step 6: Final answer
    x = 21,604.86

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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.