Home / 20,538,039.80-28,343,258.46-11,718,926.89

Finding the Fourth Proportional to 20,538,039.80, 28,343,258.46 and 11,718,926.89

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Solution

The fourth proportional to 20,538,039.80, 28,343,258.46 and 11,718,926.89 is: 16,172,554.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,039.80 : 28,343,258.46 = 11,718,926.89 : x
  2. Step 2: Convert to fraction form
    20,538,039.80/28,343,258.46 = 11,718,926.89/x
  3. Step 3: Cross multiply
    20,538,039.80x = 28,343,258.46 × 11,718,926.89
  4. Step 4: Simplify right side
    20,538,039.80x = 332,152,573,838,640.25
  5. Step 5: Solve for x
    x = 332,152,573,838,640.25/20,538,039.80
  6. Step 6: Final answer
    x = 16,172,554.79

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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.