Home / 20,531,727.90-28,330,818.93-11,364,348.78

Finding the Fourth Proportional to 20,531,727.90, 28,330,818.93 and 11,364,348.78

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Solution

The fourth proportional to 20,531,727.90, 28,330,818.93 and 11,364,348.78 is: 15,681,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531,727.90 : 28,330,818.93 = 11,364,348.78 : x
  2. Step 2: Convert to fraction form
    20,531,727.90/28,330,818.93 = 11,364,348.78/x
  3. Step 3: Cross multiply
    20,531,727.90x = 28,330,818.93 × 11,364,348.78
  4. Step 4: Simplify right side
    20,531,727.90x = 321,961,307,543,546.38
  5. Step 5: Solve for x
    x = 321,961,307,543,546.38/20,531,727.90
  6. Step 6: Final answer
    x = 15,681,159.87

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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.