Home / 19,109.72-28,660.74-15,433.24

Finding the Fourth Proportional to 19,109.72, 28,660.74 and 15,433.24

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Solution

The fourth proportional to 19,109.72, 28,660.74 and 15,433.24 is: 23,146.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.72 : 28,660.74 = 15,433.24 : x
  2. Step 2: Convert to fraction form
    19,109.72/28,660.74 = 15,433.24/x
  3. Step 3: Cross multiply
    19,109.72x = 28,660.74 × 15,433.24
  4. Step 4: Simplify right side
    19,109.72x = 442,328,079.00
  5. Step 5: Solve for x
    x = 442,328,079.00/19,109.72
  6. Step 6: Final answer
    x = 23,146.76

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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.