Home / 21,691,616.63-29,935,366.31-12,988,125.73

Finding the Fourth Proportional to 21,691,616.63, 29,935,366.31 and 12,988,125.73

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Solution

The fourth proportional to 21,691,616.63, 29,935,366.31 and 12,988,125.73 is: 17,924,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691,616.63 : 29,935,366.31 = 12,988,125.73 : x
  2. Step 2: Convert to fraction form
    21,691,616.63/29,935,366.31 = 12,988,125.73/x
  3. Step 3: Cross multiply
    21,691,616.63x = 29,935,366.31 × 12,988,125.73
  4. Step 4: Simplify right side
    21,691,616.63x = 388,804,301,193,268.69
  5. Step 5: Solve for x
    x = 388,804,301,193,268.69/21,691,616.63
  6. Step 6: Final answer
    x = 17,924,173.56

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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.