Home / 15,522.98-21,421.60-8,449.38

Finding the Fourth Proportional to 15,522.98, 21,421.60 and 8,449.38

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Solution

The fourth proportional to 15,522.98, 21,421.60 and 8,449.38 is: 11,660.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.98 : 21,421.60 = 8,449.38 : x
  2. Step 2: Convert to fraction form
    15,522.98/21,421.60 = 8,449.38/x
  3. Step 3: Cross multiply
    15,522.98x = 21,421.60 × 8,449.38
  4. Step 4: Simplify right side
    15,522.98x = 180,999,217.48
  5. Step 5: Solve for x
    x = 180,999,217.48/15,522.98
  6. Step 6: Final answer
    x = 11,660.09

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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.