Home / 21,611.40-29,826.18-12,180.84

Finding the Fourth Proportional to 21,611.40, 29,826.18 and 12,180.84

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Solution

The fourth proportional to 21,611.40, 29,826.18 and 12,180.84 is: 16,810.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.40 : 29,826.18 = 12,180.84 : x
  2. Step 2: Convert to fraction form
    21,611.40/29,826.18 = 12,180.84/x
  3. Step 3: Cross multiply
    21,611.40x = 29,826.18 × 12,180.84
  4. Step 4: Simplify right side
    21,611.40x = 363,307,926.39
  5. Step 5: Solve for x
    x = 363,307,926.39/21,611.40
  6. Step 6: Final answer
    x = 16,810.94

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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.