Home / 21,013,871.52-28,999,863.87-12,192,656.73

Finding the Fourth Proportional to 21,013,871.52, 28,999,863.87 and 12,192,656.73

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Solution

The fourth proportional to 21,013,871.52, 28,999,863.87 and 12,192,656.73 is: 16,826,284.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013,871.52 : 28,999,863.87 = 12,192,656.73 : x
  2. Step 2: Convert to fraction form
    21,013,871.52/28,999,863.87 = 12,192,656.73/x
  3. Step 3: Cross multiply
    21,013,871.52x = 28,999,863.87 × 12,192,656.73
  4. Step 4: Simplify right side
    21,013,871.52x = 353,585,385,383,639.38
  5. Step 5: Solve for x
    x = 353,585,385,383,639.38/21,013,871.52
  6. Step 6: Final answer
    x = 16,826,284.73

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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.