Home / 8,321,138.60-12,456,824.70-7,829,004.20

Finding the Fourth Proportional to 8,321,138.60, 12,456,824.70 and 7,829,004.20

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Solution

The fourth proportional to 8,321,138.60, 12,456,824.70 and 7,829,004.20 is: 11,720,094.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321,138.60 : 12,456,824.70 = 7,829,004.20 : x
  2. Step 2: Convert to fraction form
    8,321,138.60/12,456,824.70 = 7,829,004.20/x
  3. Step 3: Cross multiply
    8,321,138.60x = 12,456,824.70 × 7,829,004.20
  4. Step 4: Simplify right side
    8,321,138.60x = 97,524,532,894,963.73
  5. Step 5: Solve for x
    x = 97,524,532,894,963.73/8,321,138.60
  6. Step 6: Final answer
    x = 11,720,094.76

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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.