Home / 20,919,049.22-28,862,926.58-12,212,218.59

Finding the Fourth Proportional to 20,919,049.22, 28,862,926.58 and 12,212,218.59

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Solution

The fourth proportional to 20,919,049.22, 28,862,926.58 and 12,212,218.59 is: 16,849,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919,049.22 : 28,862,926.58 = 12,212,218.59 : x
  2. Step 2: Convert to fraction form
    20,919,049.22/28,862,926.58 = 12,212,218.59/x
  3. Step 3: Cross multiply
    20,919,049.22x = 28,862,926.58 × 12,212,218.59
  4. Step 4: Simplify right side
    20,919,049.22x = 352,480,368,572,611.69
  5. Step 5: Solve for x
    x = 352,480,368,572,611.69/20,919,049.22
  6. Step 6: Final answer
    x = 16,849,731.79

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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.