Home / 15,687,578.25-21,642,142.59-9,796,985.82

Finding the Fourth Proportional to 15,687,578.25, 21,642,142.59 and 9,796,985.82

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Solution

The fourth proportional to 15,687,578.25, 21,642,142.59 and 9,796,985.82 is: 13,515,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687,578.25 : 21,642,142.59 = 9,796,985.82 : x
  2. Step 2: Convert to fraction form
    15,687,578.25/21,642,142.59 = 9,796,985.82/x
  3. Step 3: Cross multiply
    15,687,578.25x = 21,642,142.59 × 9,796,985.82
  4. Step 4: Simplify right side
    15,687,578.25x = 212,027,764,068,648.09
  5. Step 5: Solve for x
    x = 212,027,764,068,648.09/15,687,578.25
  6. Step 6: Final answer
    x = 13,515,646.63

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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.