Home / 40,857.87-61,286.85-12,778.07

Finding the Fourth Proportional to 40,857.87, 61,286.85 and 12,778.07

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Solution

The fourth proportional to 40,857.87, 61,286.85 and 12,778.07 is: 19,167.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,857.87 : 61,286.85 = 12,778.07 : x
  2. Step 2: Convert to fraction form
    40,857.87/61,286.85 = 12,778.07/x
  3. Step 3: Cross multiply
    40,857.87x = 61,286.85 × 12,778.07
  4. Step 4: Simplify right side
    40,857.87x = 783,127,352.95
  5. Step 5: Solve for x
    x = 783,127,352.95/40,857.87
  6. Step 6: Final answer
    x = 19,167.11

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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.