Home / 19,740.85-29,631.78-11,437.09

Finding the Fourth Proportional to 19,740.85, 29,631.78 and 11,437.09

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Solution

The fourth proportional to 19,740.85, 29,631.78 and 11,437.09 is: 17,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,740.85 : 29,631.78 = 11,437.09 : x
  2. Step 2: Convert to fraction form
    19,740.85/29,631.78 = 11,437.09/x
  3. Step 3: Cross multiply
    19,740.85x = 29,631.78 × 11,437.09
  4. Step 4: Simplify right side
    19,740.85x = 338,901,260.64
  5. Step 5: Solve for x
    x = 338,901,260.64/19,740.85
  6. Step 6: Final answer
    x = 17,167.51

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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.