Home / 15,487.67-21,376.10-9,198.83

Finding the Fourth Proportional to 15,487.67, 21,376.10 and 9,198.83

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Solution

The fourth proportional to 15,487.67, 21,376.10 and 9,198.83 is: 12,696.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.67 : 21,376.10 = 9,198.83 : x
  2. Step 2: Convert to fraction form
    15,487.67/21,376.10 = 9,198.83/x
  3. Step 3: Cross multiply
    15,487.67x = 21,376.10 × 9,198.83
  4. Step 4: Simplify right side
    15,487.67x = 196,635,109.96
  5. Step 5: Solve for x
    x = 196,635,109.96/15,487.67
  6. Step 6: Final answer
    x = 12,696.24

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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.