Home / 12,149,291.20-16,766,051.90-6,643,021.76

Finding the Fourth Proportional to 12,149,291.20, 16,766,051.90 and 6,643,021.76

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Solution

The fourth proportional to 12,149,291.20, 16,766,051.90 and 6,643,021.76 is: 9,167,386.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149,291.20 : 16,766,051.90 = 6,643,021.76 : x
  2. Step 2: Convert to fraction form
    12,149,291.20/16,766,051.90 = 6,643,021.76/x
  3. Step 3: Cross multiply
    12,149,291.20x = 16,766,051.90 × 6,643,021.76
  4. Step 4: Simplify right side
    12,149,291.20x = 111,377,247,600,989.34
  5. Step 5: Solve for x
    x = 111,377,247,600,989.34/12,149,291.20
  6. Step 6: Final answer
    x = 9,167,386.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.