Home / 20,790,333.76-28,687,473.24-11,968,079.70

Finding the Fourth Proportional to 20,790,333.76, 28,687,473.24 and 11,968,079.70

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Solution

The fourth proportional to 20,790,333.76, 28,687,473.24 and 11,968,079.70 is: 16,514,115.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,333.76 : 28,687,473.24 = 11,968,079.70 : x
  2. Step 2: Convert to fraction form
    20,790,333.76/28,687,473.24 = 11,968,079.70/x
  3. Step 3: Cross multiply
    20,790,333.76x = 28,687,473.24 × 11,968,079.70
  4. Step 4: Simplify right side
    20,790,333.76x = 343,333,966,127,937.19
  5. Step 5: Solve for x
    x = 343,333,966,127,937.19/20,790,333.76
  6. Step 6: Final answer
    x = 16,514,115.17

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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.