Home / 21,308,189.76-29,385,691.56-13,963,355.28

Finding the Fourth Proportional to 21,308,189.76, 29,385,691.56 and 13,963,355.28

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Solution

The fourth proportional to 21,308,189.76, 29,385,691.56 and 13,963,355.28 is: 19,256,579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308,189.76 : 29,385,691.56 = 13,963,355.28 : x
  2. Step 2: Convert to fraction form
    21,308,189.76/29,385,691.56 = 13,963,355.28/x
  3. Step 3: Cross multiply
    21,308,189.76x = 29,385,691.56 × 13,963,355.28
  4. Step 4: Simplify right side
    21,308,189.76x = 410,322,851,400,777.38
  5. Step 5: Solve for x
    x = 410,322,851,400,777.38/21,308,189.76
  6. Step 6: Final answer
    x = 19,256,579.56

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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.