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Finding the Fourth Proportional to 18,671,376.60, 28,007,064.90 and 17,236,485.90

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Solution

The fourth proportional to 18,671,376.60, 28,007,064.90 and 17,236,485.90 is: 25,854,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671,376.60 : 28,007,064.90 = 17,236,485.90 : x
  2. Step 2: Convert to fraction form
    18,671,376.60/28,007,064.90 = 17,236,485.90/x
  3. Step 3: Cross multiply
    18,671,376.60x = 28,007,064.90 × 17,236,485.90
  4. Step 4: Simplify right side
    18,671,376.60x = 482,743,379,249,234.81
  5. Step 5: Solve for x
    x = 482,743,379,249,234.81/18,671,376.60
  6. Step 6: Final answer
    x = 25,854,728.85

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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.