Home / 21,981,891.80-32,957,477.70-13,001,821.40

Finding the Fourth Proportional to 21,981,891.80, 32,957,477.70 and 13,001,821.40

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Solution

The fourth proportional to 21,981,891.80, 32,957,477.70 and 13,001,821.40 is: 19,493,646.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981,891.80 : 32,957,477.70 = 13,001,821.40 : x
  2. Step 2: Convert to fraction form
    21,981,891.80/32,957,477.70 = 13,001,821.40/x
  3. Step 3: Cross multiply
    21,981,891.80x = 32,957,477.70 × 13,001,821.40
  4. Step 4: Simplify right side
    21,981,891.80x = 428,507,238,849,882.81
  5. Step 5: Solve for x
    x = 428,507,238,849,882.81/21,981,891.80
  6. Step 6: Final answer
    x = 19,493,646.99

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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.