Home / 11,159.78-16,740.65-4,139.87

Finding the Fourth Proportional to 11,159.78, 16,740.65 and 4,139.87

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Solution

The fourth proportional to 11,159.78, 16,740.65 and 4,139.87 is: 6,210.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.78 : 16,740.65 = 4,139.87 : x
  2. Step 2: Convert to fraction form
    11,159.78/16,740.65 = 4,139.87/x
  3. Step 3: Cross multiply
    11,159.78x = 16,740.65 × 4,139.87
  4. Step 4: Simplify right side
    11,159.78x = 69,304,067.69
  5. Step 5: Solve for x
    x = 69,304,067.69/11,159.78
  6. Step 6: Final answer
    x = 6,210.17

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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.