Home / 15,781,438.88-21,778,390.32-8,907,377.12

Finding the Fourth Proportional to 15,781,438.88, 21,778,390.32 and 8,907,377.12

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Solution

The fourth proportional to 15,781,438.88, 21,778,390.32 and 8,907,377.12 is: 12,292,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781,438.88 : 21,778,390.32 = 8,907,377.12 : x
  2. Step 2: Convert to fraction form
    15,781,438.88/21,778,390.32 = 8,907,377.12/x
  3. Step 3: Cross multiply
    15,781,438.88x = 21,778,390.32 × 8,907,377.12
  4. Step 4: Simplify right side
    15,781,438.88x = 193,988,335,646,797.47
  5. Step 5: Solve for x
    x = 193,988,335,646,797.47/15,781,438.88
  6. Step 6: Final answer
    x = 12,292,183.06

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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.