Home / 28,530.45-42,805.80-12,734.04

Finding the Fourth Proportional to 28,530.45, 42,805.80 and 12,734.04

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Solution

The fourth proportional to 28,530.45, 42,805.80 and 12,734.04 is: 19,105.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.45 : 42,805.80 = 12,734.04 : x
  2. Step 2: Convert to fraction form
    28,530.45/42,805.80 = 12,734.04/x
  3. Step 3: Cross multiply
    28,530.45x = 42,805.80 × 12,734.04
  4. Step 4: Simplify right side
    28,530.45x = 545,090,769.43
  5. Step 5: Solve for x
    x = 545,090,769.43/28,530.45
  6. Step 6: Final answer
    x = 19,105.58

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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.