Home / 21,605,624.72-29,691,063.78-20,606,486.48

Finding the Fourth Proportional to 21,605,624.72, 29,691,063.78 and 20,606,486.48

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Solution

The fourth proportional to 21,605,624.72, 29,691,063.78 and 20,606,486.48 is: 28,318,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605,624.72 : 29,691,063.78 = 20,606,486.48 : x
  2. Step 2: Convert to fraction form
    21,605,624.72/29,691,063.78 = 20,606,486.48/x
  3. Step 3: Cross multiply
    21,605,624.72x = 29,691,063.78 × 20,606,486.48
  4. Step 4: Simplify right side
    21,605,624.72x = 611,828,504,359,387.75
  5. Step 5: Solve for x
    x = 611,828,504,359,387.75/21,605,624.72
  6. Step 6: Final answer
    x = 28,318,019.60

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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.