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Finding the Fourth Proportional to 21,978,602.80, 32,967,904.20 and 11,229,060.40

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Solution

The fourth proportional to 21,978,602.80, 32,967,904.20 and 11,229,060.40 is: 16,843,590.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,602.80 : 32,967,904.20 = 11,229,060.40 : x
  2. Step 2: Convert to fraction form
    21,978,602.80/32,967,904.20 = 11,229,060.40/x
  3. Step 3: Cross multiply
    21,978,602.80x = 32,967,904.20 × 11,229,060.40
  4. Step 4: Simplify right side
    21,978,602.80x = 370,198,587,523,213.69
  5. Step 5: Solve for x
    x = 370,198,587,523,213.69/21,978,602.80
  6. Step 6: Final answer
    x = 16,843,590.60

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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.