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Finding the Fourth Proportional to 21,908,659.61, 32,865,978.60 and 9,126,174.95

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Solution

The fourth proportional to 21,908,659.61, 32,865,978.60 and 9,126,174.95 is: 13,690,507.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908,659.61 : 32,865,978.60 = 9,126,174.95 : x
  2. Step 2: Convert to fraction form
    21,908,659.61/32,865,978.60 = 9,126,174.95/x
  3. Step 3: Cross multiply
    21,908,659.61x = 32,865,978.60 × 9,126,174.95
  4. Step 4: Simplify right side
    21,908,659.61x = 299,940,670,442,226.19
  5. Step 5: Solve for x
    x = 299,940,670,442,226.19/21,908,659.61
  6. Step 6: Final answer
    x = 13,690,507.58

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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.