Home / 28,929.21-43,399.62-12,289.11

Finding the Fourth Proportional to 28,929.21, 43,399.62 and 12,289.11

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Solution

The fourth proportional to 28,929.21, 43,399.62 and 12,289.11 is: 18,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,929.21 : 43,399.62 = 12,289.11 : x
  2. Step 2: Convert to fraction form
    28,929.21/43,399.62 = 12,289.11/x
  3. Step 3: Cross multiply
    28,929.21x = 43,399.62 × 12,289.11
  4. Step 4: Simplify right side
    28,929.21x = 533,342,704.14
  5. Step 5: Solve for x
    x = 533,342,704.14/28,929.21
  6. Step 6: Final answer
    x = 18,436.13

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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.