Home / 21,127,144.80-31,690,717.20-19,699,471.20

Finding the Fourth Proportional to 21,127,144.80, 31,690,717.20 and 19,699,471.20

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Solution

The fourth proportional to 21,127,144.80, 31,690,717.20 and 19,699,471.20 is: 29,549,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127,144.80 : 31,690,717.20 = 19,699,471.20 : x
  2. Step 2: Convert to fraction form
    21,127,144.80/31,690,717.20 = 19,699,471.20/x
  3. Step 3: Cross multiply
    21,127,144.80x = 31,690,717.20 × 19,699,471.20
  4. Step 4: Simplify right side
    21,127,144.80x = 624,290,370,788,744.62
  5. Step 5: Solve for x
    x = 624,290,370,788,744.62/21,127,144.80
  6. Step 6: Final answer
    x = 29,549,206.80

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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.