Home / 21,149.58-31,724.34-8,669.62

Finding the Fourth Proportional to 21,149.58, 31,724.34 and 8,669.62

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Solution

The fourth proportional to 21,149.58, 31,724.34 and 8,669.62 is: 13,004.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.58 : 31,724.34 = 8,669.62 : x
  2. Step 2: Convert to fraction form
    21,149.58/31,724.34 = 8,669.62/x
  3. Step 3: Cross multiply
    21,149.58x = 31,724.34 × 8,669.62
  4. Step 4: Simplify right side
    21,149.58x = 275,037,972.55
  5. Step 5: Solve for x
    x = 275,037,972.55/21,149.58
  6. Step 6: Final answer
    x = 13,004.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.