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Finding the Fourth Proportional to 15,482.41, 21,365.83 and 8,408.83

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Solution

The fourth proportional to 15,482.41, 21,365.83 and 8,408.83 is: 11,604.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,482.41 : 21,365.83 = 8,408.83 : x
  2. Step 2: Convert to fraction form
    15,482.41/21,365.83 = 8,408.83/x
  3. Step 3: Cross multiply
    15,482.41x = 21,365.83 × 8,408.83
  4. Step 4: Simplify right side
    15,482.41x = 179,661,645.20
  5. Step 5: Solve for x
    x = 179,661,645.20/15,482.41
  6. Step 6: Final answer
    x = 11,604.24

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1.5x scale

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.