Home / 21,127,199.88-29,143,620.54-12,305,611.38

Finding the Fourth Proportional to 21,127,199.88, 29,143,620.54 and 12,305,611.38

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Solution

The fourth proportional to 21,127,199.88, 29,143,620.54 and 12,305,611.38 is: 16,974,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127,199.88 : 29,143,620.54 = 12,305,611.38 : x
  2. Step 2: Convert to fraction form
    21,127,199.88/29,143,620.54 = 12,305,611.38/x
  3. Step 3: Cross multiply
    21,127,199.88x = 29,143,620.54 × 12,305,611.38
  4. Step 4: Simplify right side
    21,127,199.88x = 358,630,068,571,425.75
  5. Step 5: Solve for x
    x = 358,630,068,571,425.75/21,127,199.88
  6. Step 6: Final answer
    x = 16,974,803.60

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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.