Home / 21,421,091.80-29,553,716.92-13,690,659.16

Finding the Fourth Proportional to 21,421,091.80, 29,553,716.92 and 13,690,659.16

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Solution

The fourth proportional to 21,421,091.80, 29,553,716.92 and 13,690,659.16 is: 18,888,386.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421,091.80 : 29,553,716.92 = 13,690,659.16 : x
  2. Step 2: Convert to fraction form
    21,421,091.80/29,553,716.92 = 13,690,659.16/x
  3. Step 3: Cross multiply
    21,421,091.80x = 29,553,716.92 × 13,690,659.16
  4. Step 4: Simplify right side
    21,421,091.80x = 404,609,865,262,845
  5. Step 5: Solve for x
    x = 404,609,865,262,845/21,421,091.80
  6. Step 6: Final answer
    x = 18,888,386.69

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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.