Home / 20,650,966.61-30,979,978.96-8,513,795.26

Finding the Fourth Proportional to 20,650,966.61, 30,979,978.96 and 8,513,795.26

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Solution

The fourth proportional to 20,650,966.61, 30,979,978.96 and 8,513,795.26 is: 12,772,147.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650,966.61 : 30,979,978.96 = 8,513,795.26 : x
  2. Step 2: Convert to fraction form
    20,650,966.61/30,979,978.96 = 8,513,795.26/x
  3. Step 3: Cross multiply
    20,650,966.61x = 30,979,978.96 × 8,513,795.26
  4. Step 4: Simplify right side
    20,650,966.61x = 263,757,197,981,978.72
  5. Step 5: Solve for x
    x = 263,757,197,981,978.72/20,650,966.61
  6. Step 6: Final answer
    x = 12,772,147.81

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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.