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Finding the Fourth Proportional to 18,337,687.20, 27,506,530.80 and 8,748,129.60

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Solution

The fourth proportional to 18,337,687.20, 27,506,530.80 and 8,748,129.60 is: 13,122,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337,687.20 : 27,506,530.80 = 8,748,129.60 : x
  2. Step 2: Convert to fraction form
    18,337,687.20/27,506,530.80 = 8,748,129.60/x
  3. Step 3: Cross multiply
    18,337,687.20x = 27,506,530.80 × 8,748,129.60
  4. Step 4: Simplify right side
    18,337,687.20x = 240,630,696,284,791.69
  5. Step 5: Solve for x
    x = 240,630,696,284,791.69/18,337,687.20
  6. Step 6: Final answer
    x = 13,122,194.40

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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.