Home / 21,308,155.76-29,385,644.64-13,963,321.28

Finding the Fourth Proportional to 21,308,155.76, 29,385,644.64 and 13,963,321.28

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Solution

The fourth proportional to 21,308,155.76, 29,385,644.64 and 13,963,321.28 is: 19,256,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308,155.76 : 29,385,644.64 = 13,963,321.28 : x
  2. Step 2: Convert to fraction form
    21,308,155.76/29,385,644.64 = 13,963,321.28/x
  3. Step 3: Cross multiply
    21,308,155.76x = 29,385,644.64 × 13,963,321.28
  4. Step 4: Simplify right side
    21,308,155.76x = 410,321,197,128,229.94
  5. Step 5: Solve for x
    x = 410,321,197,128,229.94/21,308,155.76
  6. Step 6: Final answer
    x = 19,256,532.65

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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.