Home / 20,981,319.36-28,926,300.60-15,731,994.48

Finding the Fourth Proportional to 20,981,319.36, 28,926,300.60 and 15,731,994.48

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Solution

The fourth proportional to 20,981,319.36, 28,926,300.60 and 15,731,994.48 is: 21,689,217.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981,319.36 : 28,926,300.60 = 15,731,994.48 : x
  2. Step 2: Convert to fraction form
    20,981,319.36/28,926,300.60 = 15,731,994.48/x
  3. Step 3: Cross multiply
    20,981,319.36x = 28,926,300.60 × 15,731,994.48
  4. Step 4: Simplify right side
    20,981,319.36x = 455,068,401,366,020.75
  5. Step 5: Solve for x
    x = 455,068,401,366,020.75/20,981,319.36
  6. Step 6: Final answer
    x = 21,689,217.61

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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.