Home / 19,860.32-29,745.11-9,479.36

Finding the Fourth Proportional to 19,860.32, 29,745.11 and 9,479.36

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Solution

The fourth proportional to 19,860.32, 29,745.11 and 9,479.36 is: 14,197.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.32 : 29,745.11 = 9,479.36 : x
  2. Step 2: Convert to fraction form
    19,860.32/29,745.11 = 9,479.36/x
  3. Step 3: Cross multiply
    19,860.32x = 29,745.11 × 9,479.36
  4. Step 4: Simplify right side
    19,860.32x = 281,964,703.99
  5. Step 5: Solve for x
    x = 281,964,703.99/19,860.32
  6. Step 6: Final answer
    x = 14,197.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.