Home / 28,969.68-43,421.24-12,305.04

Finding the Fourth Proportional to 28,969.68, 43,421.24 and 12,305.04

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Solution

The fourth proportional to 28,969.68, 43,421.24 and 12,305.04 is: 18,443.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.68 : 43,421.24 = 12,305.04 : x
  2. Step 2: Convert to fraction form
    28,969.68/43,421.24 = 12,305.04/x
  3. Step 3: Cross multiply
    28,969.68x = 43,421.24 × 12,305.04
  4. Step 4: Simplify right side
    28,969.68x = 534,300,095.05
  5. Step 5: Solve for x
    x = 534,300,095.05/28,969.68
  6. Step 6: Final answer
    x = 18,443.42

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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.