Home / 15,393.57-21,229.05-10,091.31

Finding the Fourth Proportional to 15,393.57, 21,229.05 and 10,091.31

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Solution

The fourth proportional to 15,393.57, 21,229.05 and 10,091.31 is: 13,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.57 : 21,229.05 = 10,091.31 : x
  2. Step 2: Convert to fraction form
    15,393.57/21,229.05 = 10,091.31/x
  3. Step 3: Cross multiply
    15,393.57x = 21,229.05 × 10,091.31
  4. Step 4: Simplify right side
    15,393.57x = 214,228,924.56
  5. Step 5: Solve for x
    x = 214,228,924.56/15,393.57
  6. Step 6: Final answer
    x = 13,916.78

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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.