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Finding the Fourth Proportional to 21,978,902.11, 32,961,605.55 and 15,199,043.55

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Solution

The fourth proportional to 21,978,902.11, 32,961,605.55 and 15,199,043.55 is: 22,793,899.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,902.11 : 32,961,605.55 = 15,199,043.55 : x
  2. Step 2: Convert to fraction form
    21,978,902.11/32,961,605.55 = 15,199,043.55/x
  3. Step 3: Cross multiply
    21,978,902.11x = 32,961,605.55 × 15,199,043.55
  4. Step 4: Simplify right side
    21,978,902.11x = 500,984,878,272,706.81
  5. Step 5: Solve for x
    x = 500,984,878,272,706.81/21,978,902.11
  6. Step 6: Final answer
    x = 22,793,899.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.