Home / 12,861.12-19,286.78-4,539.59

Finding the Fourth Proportional to 12,861.12, 19,286.78 and 4,539.59

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Solution

The fourth proportional to 12,861.12, 19,286.78 and 4,539.59 is: 6,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.12 : 19,286.78 = 4,539.59 : x
  2. Step 2: Convert to fraction form
    12,861.12/19,286.78 = 4,539.59/x
  3. Step 3: Cross multiply
    12,861.12x = 19,286.78 × 4,539.59
  4. Step 4: Simplify right side
    12,861.12x = 87,553,954.49
  5. Step 5: Solve for x
    x = 87,553,954.49/12,861.12
  6. Step 6: Final answer
    x = 6,807.65

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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.