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Finding the Fourth Proportional to 12,294,489.80, 18,441,734.70 and 9,903,005.30

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Solution

The fourth proportional to 12,294,489.80, 18,441,734.70 and 9,903,005.30 is: 14,854,507.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,294,489.80 : 18,441,734.70 = 9,903,005.30 : x
  2. Step 2: Convert to fraction form
    12,294,489.80/18,441,734.70 = 9,903,005.30/x
  3. Step 3: Cross multiply
    12,294,489.80x = 18,441,734.70 × 9,903,005.30
  4. Step 4: Simplify right side
    12,294,489.80x = 182,628,596,475,293.91
  5. Step 5: Solve for x
    x = 182,628,596,475,293.91/12,294,489.80
  6. Step 6: Final answer
    x = 14,854,507.95

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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.