Home / 15,867,649.12-21,897,817.68-8,991,902.56

Finding the Fourth Proportional to 15,867,649.12, 21,897,817.68 and 8,991,902.56

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Solution

The fourth proportional to 15,867,649.12, 21,897,817.68 and 8,991,902.56 is: 12,409,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867,649.12 : 21,897,817.68 = 8,991,902.56 : x
  2. Step 2: Convert to fraction form
    15,867,649.12/21,897,817.68 = 8,991,902.56/x
  3. Step 3: Cross multiply
    15,867,649.12x = 21,897,817.68 × 8,991,902.56
  4. Step 4: Simplify right side
    15,867,649.12x = 196,903,042,855,205.28
  5. Step 5: Solve for x
    x = 196,903,042,855,205.28/15,867,649.12
  6. Step 6: Final answer
    x = 12,409,087.28

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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.