Home / 12,988,474.20-19,489,709.70-5,416,205.40

Finding the Fourth Proportional to 12,988,474.20, 19,489,709.70 and 5,416,205.40

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Solution

The fourth proportional to 12,988,474.20, 19,489,709.70 and 5,416,205.40 is: 8,127,226.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988,474.20 : 19,489,709.70 = 5,416,205.40 : x
  2. Step 2: Convert to fraction form
    12,988,474.20/19,489,709.70 = 5,416,205.40/x
  3. Step 3: Cross multiply
    12,988,474.20x = 19,489,709.70 × 5,416,205.40
  4. Step 4: Simplify right side
    12,988,474.20x = 105,560,270,921,572.39
  5. Step 5: Solve for x
    x = 105,560,270,921,572.39/12,988,474.20
  6. Step 6: Final answer
    x = 8,127,226.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.