Home / 21,669.92-29,902.29-12,236.66

Finding the Fourth Proportional to 21,669.92, 29,902.29 and 12,236.66

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Solution

The fourth proportional to 21,669.92, 29,902.29 and 12,236.66 is: 16,885.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.92 : 29,902.29 = 12,236.66 : x
  2. Step 2: Convert to fraction form
    21,669.92/29,902.29 = 12,236.66/x
  3. Step 3: Cross multiply
    21,669.92x = 29,902.29 × 12,236.66
  4. Step 4: Simplify right side
    21,669.92x = 365,904,155.95
  5. Step 5: Solve for x
    x = 365,904,155.95/21,669.92
  6. Step 6: Final answer
    x = 16,885.35

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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.