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Finding the Fourth Proportional to 19,120,722, 28,699,978.80 and 10,145,274

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Solution

The fourth proportional to 19,120,722, 28,699,978.80 and 10,145,274 is: 15,227,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120,722 : 28,699,978.80 = 10,145,274 : x
  2. Step 2: Convert to fraction form
    19,120,722/28,699,978.80 = 10,145,274/x
  3. Step 3: Cross multiply
    19,120,722x = 28,699,978.80 × 10,145,274
  4. Step 4: Simplify right side
    19,120,722x = 291,169,148,720,191.19
  5. Step 5: Solve for x
    x = 291,169,148,720,191.19/19,120,722
  6. Step 6: Final answer
    x = 15,227,936.93

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