Home / 21,421,092.80-29,553,718.30-13,690,660.16

Finding the Fourth Proportional to 21,421,092.80, 29,553,718.30 and 13,690,660.16

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Solution

The fourth proportional to 21,421,092.80, 29,553,718.30 and 13,690,660.16 is: 18,888,388.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421,092.80 : 29,553,718.30 = 13,690,660.16 : x
  2. Step 2: Convert to fraction form
    21,421,092.80/29,553,718.30 = 13,690,660.16/x
  3. Step 3: Cross multiply
    21,421,092.80x = 29,553,718.30 × 13,690,660.16
  4. Step 4: Simplify right side
    21,421,092.80x = 404,609,913,709,672.94
  5. Step 5: Solve for x
    x = 404,609,913,709,672.94/21,421,092.80
  6. Step 6: Final answer
    x = 18,888,388.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.