Home / 20,489,854.78-28,276,009.68-11,322,497.53

Finding the Fourth Proportional to 20,489,854.78, 28,276,009.68 and 11,322,497.53

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Solution

The fourth proportional to 20,489,854.78, 28,276,009.68 and 11,322,497.53 is: 15,625,052.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489,854.78 : 28,276,009.68 = 11,322,497.53 : x
  2. Step 2: Convert to fraction form
    20,489,854.78/28,276,009.68 = 11,322,497.53/x
  3. Step 3: Cross multiply
    20,489,854.78x = 28,276,009.68 × 11,322,497.53
  4. Step 4: Simplify right side
    20,489,854.78x = 320,155,049,760,056.06
  5. Step 5: Solve for x
    x = 320,155,049,760,056.06/20,489,854.78
  6. Step 6: Final answer
    x = 15,625,052.16

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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.