Home / 21,730.34-29,872.48-18,694.33

Finding the Fourth Proportional to 21,730.34, 29,872.48 and 18,694.33

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Solution

The fourth proportional to 21,730.34, 29,872.48 and 18,694.33 is: 25,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.34 : 29,872.48 = 18,694.33 : x
  2. Step 2: Convert to fraction form
    21,730.34/29,872.48 = 18,694.33/x
  3. Step 3: Cross multiply
    21,730.34x = 29,872.48 × 18,694.33
  4. Step 4: Simplify right side
    21,730.34x = 558,445,912.67
  5. Step 5: Solve for x
    x = 558,445,912.67/21,730.34
  6. Step 6: Final answer
    x = 25,698.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.