Home / 15,625.96-21,564.42-8,912.68

Finding the Fourth Proportional to 15,625.96, 21,564.42 and 8,912.68

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Solution

The fourth proportional to 15,625.96, 21,564.42 and 8,912.68 is: 12,299.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.96 : 21,564.42 = 8,912.68 : x
  2. Step 2: Convert to fraction form
    15,625.96/21,564.42 = 8,912.68/x
  3. Step 3: Cross multiply
    15,625.96x = 21,564.42 × 8,912.68
  4. Step 4: Simplify right side
    15,625.96x = 192,196,774.85
  5. Step 5: Solve for x
    x = 192,196,774.85/15,625.96
  6. Step 6: Final answer
    x = 12,299.84

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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.