Home / 20,238,465.72-27,929,119.42-11,071,108.47

Finding the Fourth Proportional to 20,238,465.72, 27,929,119.42 and 11,071,108.47

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Solution

The fourth proportional to 20,238,465.72, 27,929,119.42 and 11,071,108.47 is: 15,278,149.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238,465.72 : 27,929,119.42 = 11,071,108.47 : x
  2. Step 2: Convert to fraction form
    20,238,465.72/27,929,119.42 = 11,071,108.47/x
  3. Step 3: Cross multiply
    20,238,465.72x = 27,929,119.42 × 11,071,108.47
  4. Step 4: Simplify right side
    20,238,465.72x = 309,206,310,570,403.50
  5. Step 5: Solve for x
    x = 309,206,310,570,403.50/20,238,465.72
  6. Step 6: Final answer
    x = 15,278,149.78

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1.5x scale

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.