Home / 21,609.06-29,820.11-12,177.63

Finding the Fourth Proportional to 21,609.06, 29,820.11 and 12,177.63

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Solution

The fourth proportional to 21,609.06, 29,820.11 and 12,177.63 is: 16,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.06 : 29,820.11 = 12,177.63 : x
  2. Step 2: Convert to fraction form
    21,609.06/29,820.11 = 12,177.63/x
  3. Step 3: Cross multiply
    21,609.06x = 29,820.11 × 12,177.63
  4. Step 4: Simplify right side
    21,609.06x = 363,138,205.25
  5. Step 5: Solve for x
    x = 363,138,205.25/21,609.06
  6. Step 6: Final answer
    x = 16,804.91

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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.