Home / 15,482.05-21,365.31-8,408.47

Finding the Fourth Proportional to 15,482.05, 21,365.31 and 8,408.47

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Solution

The fourth proportional to 15,482.05, 21,365.31 and 8,408.47 is: 11,603.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,482.05 : 21,365.31 = 8,408.47 : x
  2. Step 2: Convert to fraction form
    15,482.05/21,365.31 = 8,408.47/x
  3. Step 3: Cross multiply
    15,482.05x = 21,365.31 × 8,408.47
  4. Step 4: Simplify right side
    15,482.05x = 179,649,568.18
  5. Step 5: Solve for x
    x = 179,649,568.18/15,482.05
  6. Step 6: Final answer
    x = 11,603.73

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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.