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Finding the Fourth Proportional to 15,196,602.71, 20,971,346.31 and 8,227,353.62

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Solution

The fourth proportional to 15,196,602.71, 20,971,346.31 and 8,227,353.62 is: 11,353,766.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196,602.71 : 20,971,346.31 = 8,227,353.62 : x
  2. Step 2: Convert to fraction form
    15,196,602.71/20,971,346.31 = 8,227,353.62/x
  3. Step 3: Cross multiply
    15,196,602.71x = 20,971,346.31 × 8,227,353.62
  4. Step 4: Simplify right side
    15,196,602.71x = 172,538,681,874,995.41
  5. Step 5: Solve for x
    x = 172,538,681,874,995.41/15,196,602.71
  6. Step 6: Final answer
    x = 11,353,766.71

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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.