Home / 21,707,919.28-29,956,987.54-11,918,997.50

Finding the Fourth Proportional to 21,707,919.28, 29,956,987.54 and 11,918,997.50

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Solution

The fourth proportional to 21,707,919.28, 29,956,987.54 and 11,918,997.50 is: 16,448,248.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707,919.28 : 29,956,987.54 = 11,918,997.50 : x
  2. Step 2: Convert to fraction form
    21,707,919.28/29,956,987.54 = 11,918,997.50/x
  3. Step 3: Cross multiply
    21,707,919.28x = 29,956,987.54 × 11,918,997.50
  4. Step 4: Simplify right side
    21,707,919.28x = 357,057,259,596,791.12
  5. Step 5: Solve for x
    x = 357,057,259,596,791.12/21,707,919.28
  6. Step 6: Final answer
    x = 16,448,248.91

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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.