Home / 20,790,255.91-28,687,365.93-11,968,002.49

Finding the Fourth Proportional to 20,790,255.91, 28,687,365.93 and 11,968,002.49

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Solution

The fourth proportional to 20,790,255.91, 28,687,365.93 and 11,968,002.49 is: 16,514,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,255.91 : 28,687,365.93 = 11,968,002.49 : x
  2. Step 2: Convert to fraction form
    20,790,255.91/28,687,365.93 = 11,968,002.49/x
  3. Step 3: Cross multiply
    20,790,255.91x = 28,687,365.93 × 11,968,002.49
  4. Step 4: Simplify right side
    20,790,255.91x = 343,330,466,881,781.19
  5. Step 5: Solve for x
    x = 343,330,466,881,781.19/20,790,255.91
  6. Step 6: Final answer
    x = 16,514,008.70

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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.