Home / 21,001,581.80-31,502,372.70-19,726,123.40

Finding the Fourth Proportional to 21,001,581.80, 31,502,372.70 and 19,726,123.40

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Solution

The fourth proportional to 21,001,581.80, 31,502,372.70 and 19,726,123.40 is: 29,589,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,581.80 : 31,502,372.70 = 19,726,123.40 : x
  2. Step 2: Convert to fraction form
    21,001,581.80/31,502,372.70 = 19,726,123.40/x
  3. Step 3: Cross multiply
    21,001,581.80x = 31,502,372.70 × 19,726,123.40
  4. Step 4: Simplify right side
    21,001,581.80x = 621,419,691,272,991.12
  5. Step 5: Solve for x
    x = 621,419,691,272,991.12/21,001,581.80
  6. Step 6: Final answer
    x = 29,589,185.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.