Home / 21,195.83-31,824.95-11,854.15

Finding the Fourth Proportional to 21,195.83, 31,824.95 and 11,854.15

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Solution

The fourth proportional to 21,195.83, 31,824.95 and 11,854.15 is: 17,798.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.83 : 31,824.95 = 11,854.15 : x
  2. Step 2: Convert to fraction form
    21,195.83/31,824.95 = 11,854.15/x
  3. Step 3: Cross multiply
    21,195.83x = 31,824.95 × 11,854.15
  4. Step 4: Simplify right side
    21,195.83x = 377,257,658.89
  5. Step 5: Solve for x
    x = 377,257,658.89/21,195.83
  6. Step 6: Final answer
    x = 17,798.68

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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.