Home / 21,059,376.66-29,072,042.37-13,328,166.42

Finding the Fourth Proportional to 21,059,376.66, 29,072,042.37 and 13,328,166.42

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Solution

The fourth proportional to 21,059,376.66, 29,072,042.37 and 13,328,166.42 is: 18,399,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059,376.66 : 29,072,042.37 = 13,328,166.42 : x
  2. Step 2: Convert to fraction form
    21,059,376.66/29,072,042.37 = 13,328,166.42/x
  3. Step 3: Cross multiply
    21,059,376.66x = 29,072,042.37 × 13,328,166.42
  4. Step 4: Simplify right side
    21,059,376.66x = 387,477,018,876,651.25
  5. Step 5: Solve for x
    x = 387,477,018,876,651.25/21,059,376.66
  6. Step 6: Final answer
    x = 18,399,263.43

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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.