Home / 21,611.16-29,823.98-12,180.04

Finding the Fourth Proportional to 21,611.16, 29,823.98 and 12,180.04

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Solution

The fourth proportional to 21,611.16, 29,823.98 and 12,180.04 is: 16,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.16 : 29,823.98 = 12,180.04 : x
  2. Step 2: Convert to fraction form
    21,611.16/29,823.98 = 12,180.04/x
  3. Step 3: Cross multiply
    21,611.16x = 29,823.98 × 12,180.04
  4. Step 4: Simplify right side
    21,611.16x = 363,257,269.36
  5. Step 5: Solve for x
    x = 363,257,269.36/21,611.16
  6. Step 6: Final answer
    x = 16,808.78

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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.