Home / 19,930.80-29,842.74-11,140.68

Finding the Fourth Proportional to 19,930.80, 29,842.74 and 11,140.68

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Solution

The fourth proportional to 19,930.80, 29,842.74 and 11,140.68 is: 16,681.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.80 : 29,842.74 = 11,140.68 : x
  2. Step 2: Convert to fraction form
    19,930.80/29,842.74 = 11,140.68/x
  3. Step 3: Cross multiply
    19,930.80x = 29,842.74 × 11,140.68
  4. Step 4: Simplify right side
    19,930.80x = 332,468,416.66
  5. Step 5: Solve for x
    x = 332,468,416.66/19,930.80
  6. Step 6: Final answer
    x = 16,681.14

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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.