Home / 21,648.83-29,882.18-12,699.95

Finding the Fourth Proportional to 21,648.83, 29,882.18 and 12,699.95

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Solution

The fourth proportional to 21,648.83, 29,882.18 and 12,699.95 is: 17,529.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.83 : 29,882.18 = 12,699.95 : x
  2. Step 2: Convert to fraction form
    21,648.83/29,882.18 = 12,699.95/x
  3. Step 3: Cross multiply
    21,648.83x = 29,882.18 × 12,699.95
  4. Step 4: Simplify right side
    21,648.83x = 379,502,074.23
  5. Step 5: Solve for x
    x = 379,502,074.23/21,648.83
  6. Step 6: Final answer
    x = 17,529.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.