Home / 20,996,106.72-28,974,728.88-11,828,893.92

Finding the Fourth Proportional to 20,996,106.72, 28,974,728.88 and 11,828,893.92

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Solution

The fourth proportional to 20,996,106.72, 28,974,728.88 and 11,828,893.92 is: 16,323,930.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996,106.72 : 28,974,728.88 = 11,828,893.92 : x
  2. Step 2: Convert to fraction form
    20,996,106.72/28,974,728.88 = 11,828,893.92/x
  3. Step 3: Cross multiply
    20,996,106.72x = 28,974,728.88 × 11,828,893.92
  4. Step 4: Simplify right side
    20,996,106.72x = 342,738,994,282,280.38
  5. Step 5: Solve for x
    x = 342,738,994,282,280.38/20,996,106.72
  6. Step 6: Final answer
    x = 16,323,930.85

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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.