Home / 19,578.91-27,006.61-11,615.50

Finding the Fourth Proportional to 19,578.91, 27,006.61 and 11,615.50

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Solution

The fourth proportional to 19,578.91, 27,006.61 and 11,615.50 is: 16,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.91 : 27,006.61 = 11,615.50 : x
  2. Step 2: Convert to fraction form
    19,578.91/27,006.61 = 11,615.50/x
  3. Step 3: Cross multiply
    19,578.91x = 27,006.61 × 11,615.50
  4. Step 4: Simplify right side
    19,578.91x = 313,695,278.46
  5. Step 5: Solve for x
    x = 313,695,278.46/19,578.91
  6. Step 6: Final answer
    x = 16,022.10

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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.