Home / 21,605,623.72-29,691,062.41-20,606,485.48

Finding the Fourth Proportional to 21,605,623.72, 29,691,062.41 and 20,606,485.48

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Solution

The fourth proportional to 21,605,623.72, 29,691,062.41 and 20,606,485.48 is: 28,318,018.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605,623.72 : 29,691,062.41 = 20,606,485.48 : x
  2. Step 2: Convert to fraction form
    21,605,623.72/29,691,062.41 = 20,606,485.48/x
  3. Step 3: Cross multiply
    21,605,623.72x = 29,691,062.41 × 20,606,485.48
  4. Step 4: Simplify right side
    21,605,623.72x = 611,828,446,437,438.88
  5. Step 5: Solve for x
    x = 611,828,446,437,438.88/21,605,623.72
  6. Step 6: Final answer
    x = 28,318,018.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.