Home / 12,605.75-18,906.95-4,285.43

Finding the Fourth Proportional to 12,605.75, 18,906.95 and 4,285.43

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Solution

The fourth proportional to 12,605.75, 18,906.95 and 4,285.43 is: 6,427.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.75 : 18,906.95 = 4,285.43 : x
  2. Step 2: Convert to fraction form
    12,605.75/18,906.95 = 4,285.43/x
  3. Step 3: Cross multiply
    12,605.75x = 18,906.95 × 4,285.43
  4. Step 4: Simplify right side
    12,605.75x = 81,024,389.31
  5. Step 5: Solve for x
    x = 81,024,389.31/12,605.75
  6. Step 6: Final answer
    x = 6,427.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.