Home / 21,286,881.60-31,934,469.60-8,505,211.20

Finding the Fourth Proportional to 21,286,881.60, 31,934,469.60 and 8,505,211.20

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Solution

The fourth proportional to 21,286,881.60, 31,934,469.60 and 8,505,211.20 is: 12,759,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286,881.60 : 31,934,469.60 = 8,505,211.20 : x
  2. Step 2: Convert to fraction form
    21,286,881.60/31,934,469.60 = 8,505,211.20/x
  3. Step 3: Cross multiply
    21,286,881.60x = 31,934,469.60 × 8,505,211.20
  4. Step 4: Simplify right side
    21,286,881.60x = 271,609,408,507,979.50
  5. Step 5: Solve for x
    x = 271,609,408,507,979.50/21,286,881.60
  6. Step 6: Final answer
    x = 12,759,473.82

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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.