Home / 19,839.70-27,379.99-13,113.66

Finding the Fourth Proportional to 19,839.70, 27,379.99 and 13,113.66

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Solution

The fourth proportional to 19,839.70, 27,379.99 and 13,113.66 is: 18,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.70 : 27,379.99 = 13,113.66 : x
  2. Step 2: Convert to fraction form
    19,839.70/27,379.99 = 13,113.66/x
  3. Step 3: Cross multiply
    19,839.70x = 27,379.99 × 13,113.66
  4. Step 4: Simplify right side
    19,839.70x = 359,051,998.73
  5. Step 5: Solve for x
    x = 359,051,998.73/19,839.70
  6. Step 6: Final answer
    x = 18,097.65

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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.