Home / 21,115,159.38-29,139,369.30-11,947,802.13

Finding the Fourth Proportional to 21,115,159.38, 29,139,369.30 and 11,947,802.13

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Solution

The fourth proportional to 21,115,159.38, 29,139,369.30 and 11,947,802.13 is: 16,488,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,159.38 : 29,139,369.30 = 11,947,802.13 : x
  2. Step 2: Convert to fraction form
    21,115,159.38/29,139,369.30 = 11,947,802.13/x
  3. Step 3: Cross multiply
    21,115,159.38x = 29,139,369.30 × 11,947,802.13
  4. Step 4: Simplify right side
    21,115,159.38x = 348,151,418,589,396.62
  5. Step 5: Solve for x
    x = 348,151,418,589,396.62/21,115,159.38
  6. Step 6: Final answer
    x = 16,488,221.20

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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.