Home / 21,553.35-32,317.83-8,390.58

Finding the Fourth Proportional to 21,553.35, 32,317.83 and 8,390.58

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Solution

The fourth proportional to 21,553.35, 32,317.83 and 8,390.58 is: 12,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.35 : 32,317.83 = 8,390.58 : x
  2. Step 2: Convert to fraction form
    21,553.35/32,317.83 = 8,390.58/x
  3. Step 3: Cross multiply
    21,553.35x = 32,317.83 × 8,390.58
  4. Step 4: Simplify right side
    21,553.35x = 271,165,338.04
  5. Step 5: Solve for x
    x = 271,165,338.04/21,553.35
  6. Step 6: Final answer
    x = 12,581.12

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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.