Home / 19,708.11-29,488.05-11,781.45

Finding the Fourth Proportional to 19,708.11, 29,488.05 and 11,781.45

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Solution

The fourth proportional to 19,708.11, 29,488.05 and 11,781.45 is: 17,627.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,708.11 : 29,488.05 = 11,781.45 : x
  2. Step 2: Convert to fraction form
    19,708.11/29,488.05 = 11,781.45/x
  3. Step 3: Cross multiply
    19,708.11x = 29,488.05 × 11,781.45
  4. Step 4: Simplify right side
    19,708.11x = 347,411,986.67
  5. Step 5: Solve for x
    x = 347,411,986.67/19,708.11
  6. Step 6: Final answer
    x = 17,627.87

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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.