Home / 22,749.28-31,394.64-13,318.24

Finding the Fourth Proportional to 22,749.28, 31,394.64 and 13,318.24

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Solution

The fourth proportional to 22,749.28, 31,394.64 and 13,318.24 is: 18,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,749.28 : 31,394.64 = 13,318.24 : x
  2. Step 2: Convert to fraction form
    22,749.28/31,394.64 = 13,318.24/x
  3. Step 3: Cross multiply
    22,749.28x = 31,394.64 × 13,318.24
  4. Step 4: Simplify right side
    22,749.28x = 418,121,350.23
  5. Step 5: Solve for x
    x = 418,121,350.23/22,749.28
  6. Step 6: Final answer
    x = 18,379.54

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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.