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Finding the Fourth Proportional to 20,218,540.40, 30,327,810.60 and 20,218,540.40

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Solution

The fourth proportional to 20,218,540.40, 30,327,810.60 and 20,218,540.40 is: 30,327,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,540.40 : 30,327,810.60 = 20,218,540.40 : x
  2. Step 2: Convert to fraction form
    20,218,540.40/30,327,810.60 = 20,218,540.40/x
  3. Step 3: Cross multiply
    20,218,540.40x = 30,327,810.60 × 20,218,540.40
  4. Step 4: Simplify right side
    20,218,540.40x = 613,184,063,859,648.25
  5. Step 5: Solve for x
    x = 613,184,063,859,648.25/20,218,540.40
  6. Step 6: Final answer
    x = 30,327,810.60

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1.5x scale

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.