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Finding the Fourth Proportional to 12,291,945.90, 18,402,489.45 and 12,291,945.90

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Solution

The fourth proportional to 12,291,945.90, 18,402,489.45 and 12,291,945.90 is: 18,402,489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291,945.90 : 18,402,489.45 = 12,291,945.90 : x
  2. Step 2: Convert to fraction form
    12,291,945.90/18,402,489.45 = 12,291,945.90/x
  3. Step 3: Cross multiply
    12,291,945.90x = 18,402,489.45 × 12,291,945.90
  4. Step 4: Simplify right side
    12,291,945.90x = 226,202,404,744,720.75
  5. Step 5: Solve for x
    x = 226,202,404,744,720.75/12,291,945.90
  6. Step 6: Final answer
    x = 18,402,489.45

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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.