Home / 13,606.18-18,787.55-11,379.69

Finding the Fourth Proportional to 13,606.18, 18,787.55 and 11,379.69

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Solution

The fourth proportional to 13,606.18, 18,787.55 and 11,379.69 is: 15,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.18 : 18,787.55 = 11,379.69 : x
  2. Step 2: Convert to fraction form
    13,606.18/18,787.55 = 11,379.69/x
  3. Step 3: Cross multiply
    13,606.18x = 18,787.55 × 11,379.69
  4. Step 4: Simplify right side
    13,606.18x = 213,796,437.96
  5. Step 5: Solve for x
    x = 213,796,437.96/13,606.18
  6. Step 6: Final answer
    x = 15,713.19

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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.