Home / 15,625.85-21,558.31-8,906.63

Finding the Fourth Proportional to 15,625.85, 21,558.31 and 8,906.63

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Solution

The fourth proportional to 15,625.85, 21,558.31 and 8,906.63 is: 12,288.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.85 : 21,558.31 = 8,906.63 : x
  2. Step 2: Convert to fraction form
    15,625.85/21,558.31 = 8,906.63/x
  3. Step 3: Cross multiply
    15,625.85x = 21,558.31 × 8,906.63
  4. Step 4: Simplify right side
    15,625.85x = 192,011,890.60
  5. Step 5: Solve for x
    x = 192,011,890.60/15,625.85
  6. Step 6: Final answer
    x = 12,288.09

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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.