Home / 20,958,914.94-28,920,988.71-11,791,402.62

Finding the Fourth Proportional to 20,958,914.94, 28,920,988.71 and 11,791,402.62

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Solution

The fourth proportional to 20,958,914.94, 28,920,988.71 and 11,791,402.62 is: 16,270,833.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,914.94 : 28,920,988.71 = 11,791,402.62 : x
  2. Step 2: Convert to fraction form
    20,958,914.94/28,920,988.71 = 11,791,402.62/x
  3. Step 3: Cross multiply
    20,958,914.94x = 28,920,988.71 × 11,791,402.62
  4. Step 4: Simplify right side
    20,958,914.94x = 341,019,022,048,084.44
  5. Step 5: Solve for x
    x = 341,019,022,048,084.44/20,958,914.94
  6. Step 6: Final answer
    x = 16,270,833.82

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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.