Home / 20,790,254.91-28,687,364.55-11,968,001.49

Finding the Fourth Proportional to 20,790,254.91, 28,687,364.55 and 11,968,001.49

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Solution

The fourth proportional to 20,790,254.91, 28,687,364.55 and 11,968,001.49 is: 16,514,007.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,254.91 : 28,687,364.55 = 11,968,001.49 : x
  2. Step 2: Convert to fraction form
    20,790,254.91/28,687,364.55 = 11,968,001.49/x
  3. Step 3: Cross multiply
    20,790,254.91x = 28,687,364.55 × 11,968,001.49
  4. Step 4: Simplify right side
    20,790,254.91x = 343,330,421,678,573.19
  5. Step 5: Solve for x
    x = 343,330,421,678,573.19/20,790,254.91
  6. Step 6: Final answer
    x = 16,514,007.32

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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.