Home / 22,638.70-31,245.16-13,207.28

Finding the Fourth Proportional to 22,638.70, 31,245.16 and 13,207.28

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Solution

The fourth proportional to 22,638.70, 31,245.16 and 13,207.28 is: 18,228.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.70 : 31,245.16 = 13,207.28 : x
  2. Step 2: Convert to fraction form
    22,638.70/31,245.16 = 13,207.28/x
  3. Step 3: Cross multiply
    22,638.70x = 31,245.16 × 13,207.28
  4. Step 4: Simplify right side
    22,638.70x = 412,663,576.76
  5. Step 5: Solve for x
    x = 412,663,576.76/22,638.70
  6. Step 6: Final answer
    x = 18,228.24

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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.