Home / 15,625.56-21,564.24-8,912.49

Finding the Fourth Proportional to 15,625.56, 21,564.24 and 8,912.49

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Solution

The fourth proportional to 15,625.56, 21,564.24 and 8,912.49 is: 12,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.56 : 21,564.24 = 8,912.49 : x
  2. Step 2: Convert to fraction form
    15,625.56/21,564.24 = 8,912.49/x
  3. Step 3: Cross multiply
    15,625.56x = 21,564.24 × 8,912.49
  4. Step 4: Simplify right side
    15,625.56x = 192,191,073.36
  5. Step 5: Solve for x
    x = 192,191,073.36/15,625.56
  6. Step 6: Final answer
    x = 12,299.79

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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.