Home / 15,625.23-21,560.25-8,910.99

Finding the Fourth Proportional to 15,625.23, 21,560.25 and 8,910.99

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Solution

The fourth proportional to 15,625.23, 21,560.25 and 8,910.99 is: 12,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.23 : 21,560.25 = 8,910.99 : x
  2. Step 2: Convert to fraction form
    15,625.23/21,560.25 = 8,910.99/x
  3. Step 3: Cross multiply
    15,625.23x = 21,560.25 × 8,910.99
  4. Step 4: Simplify right side
    15,625.23x = 192,123,172.15
  5. Step 5: Solve for x
    x = 192,123,172.15/15,625.23
  6. Step 6: Final answer
    x = 12,295.70

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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.