Home / 13,998.12-21,006.90-8,166.12

Finding the Fourth Proportional to 13,998.12, 21,006.90 and 8,166.12

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Solution

The fourth proportional to 13,998.12, 21,006.90 and 8,166.12 is: 12,254.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.12 : 21,006.90 = 8,166.12 : x
  2. Step 2: Convert to fraction form
    13,998.12/21,006.90 = 8,166.12/x
  3. Step 3: Cross multiply
    13,998.12x = 21,006.90 × 8,166.12
  4. Step 4: Simplify right side
    13,998.12x = 171,544,866.23
  5. Step 5: Solve for x
    x = 171,544,866.23/13,998.12
  6. Step 6: Final answer
    x = 12,254.85

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Double scale
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Similar ratio
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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.