Home / 18,970.72-28,429.62-14,791.68

Finding the Fourth Proportional to 18,970.72, 28,429.62 and 14,791.68

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Solution

The fourth proportional to 18,970.72, 28,429.62 and 14,791.68 is: 22,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.72 : 28,429.62 = 14,791.68 : x
  2. Step 2: Convert to fraction form
    18,970.72/28,429.62 = 14,791.68/x
  3. Step 3: Cross multiply
    18,970.72x = 28,429.62 × 14,791.68
  4. Step 4: Simplify right side
    18,970.72x = 420,521,841.56
  5. Step 5: Solve for x
    x = 420,521,841.56/18,970.72
  6. Step 6: Final answer
    x = 22,166.89

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1.5x scale

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.