Home / 21,615.76-29,828.82-12,184.12

Finding the Fourth Proportional to 21,615.76, 29,828.82 and 12,184.12

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Solution

The fourth proportional to 21,615.76, 29,828.82 and 12,184.12 is: 16,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.76 : 29,828.82 = 12,184.12 : x
  2. Step 2: Convert to fraction form
    21,615.76/29,828.82 = 12,184.12/x
  3. Step 3: Cross multiply
    21,615.76x = 29,828.82 × 12,184.12
  4. Step 4: Simplify right side
    21,615.76x = 363,437,922.34
  5. Step 5: Solve for x
    x = 363,437,922.34/21,615.76
  6. Step 6: Final answer
    x = 16,813.56

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1.5x scale

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.