Home / 28,919.30-43,357.35-12,265.70

Finding the Fourth Proportional to 28,919.30, 43,357.35 and 12,265.70

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Solution

The fourth proportional to 28,919.30, 43,357.35 and 12,265.70 is: 18,389.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.30 : 43,357.35 = 12,265.70 : x
  2. Step 2: Convert to fraction form
    28,919.30/43,357.35 = 12,265.70/x
  3. Step 3: Cross multiply
    28,919.30x = 43,357.35 × 12,265.70
  4. Step 4: Simplify right side
    28,919.30x = 531,808,247.90
  5. Step 5: Solve for x
    x = 531,808,247.90/28,919.30
  6. Step 6: Final answer
    x = 18,389.39

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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.