Home / 18,972.63-28,455.30-5,821.47

Finding the Fourth Proportional to 18,972.63, 28,455.30 and 5,821.47

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Solution

The fourth proportional to 18,972.63, 28,455.30 and 5,821.47 is: 8,731.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.63 : 28,455.30 = 5,821.47 : x
  2. Step 2: Convert to fraction form
    18,972.63/28,455.30 = 5,821.47/x
  3. Step 3: Cross multiply
    18,972.63x = 28,455.30 × 5,821.47
  4. Step 4: Simplify right side
    18,972.63x = 165,651,675.29
  5. Step 5: Solve for x
    x = 165,651,675.29/18,972.63
  6. Step 6: Final answer
    x = 8,731.09

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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.