Home / 15,686,993.22-21,644,692.65-9,157,659.54

Finding the Fourth Proportional to 15,686,993.22, 21,644,692.65 and 9,157,659.54

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Solution

The fourth proportional to 15,686,993.22, 21,644,692.65 and 9,157,659.54 is: 12,635,609.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,993.22 : 21,644,692.65 = 9,157,659.54 : x
  2. Step 2: Convert to fraction form
    15,686,993.22/21,644,692.65 = 9,157,659.54/x
  3. Step 3: Cross multiply
    15,686,993.22x = 21,644,692.65 × 9,157,659.54
  4. Step 4: Simplify right side
    15,686,993.22x = 198,214,726,136,640.34
  5. Step 5: Solve for x
    x = 198,214,726,136,640.34/15,686,993.22
  6. Step 6: Final answer
    x = 12,635,609.86

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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.