Home / 10,791,646.60-16,187,469.90-7,780,147.60

Finding the Fourth Proportional to 10,791,646.60, 16,187,469.90 and 7,780,147.60

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Solution

The fourth proportional to 10,791,646.60, 16,187,469.90 and 7,780,147.60 is: 11,670,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791,646.60 : 16,187,469.90 = 7,780,147.60 : x
  2. Step 2: Convert to fraction form
    10,791,646.60/16,187,469.90 = 7,780,147.60/x
  3. Step 3: Cross multiply
    10,791,646.60x = 16,187,469.90 × 7,780,147.60
  4. Step 4: Simplify right side
    10,791,646.60x = 125,940,905,092,557.23
  5. Step 5: Solve for x
    x = 125,940,905,092,557.23/10,791,646.60
  6. Step 6: Final answer
    x = 11,670,221.40

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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.