Home / 19,145.76-28,738.07-12,108.48

Finding the Fourth Proportional to 19,145.76, 28,738.07 and 12,108.48

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Solution

The fourth proportional to 19,145.76, 28,738.07 and 12,108.48 is: 18,175.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.76 : 28,738.07 = 12,108.48 : x
  2. Step 2: Convert to fraction form
    19,145.76/28,738.07 = 12,108.48/x
  3. Step 3: Cross multiply
    19,145.76x = 28,738.07 × 12,108.48
  4. Step 4: Simplify right side
    19,145.76x = 347,974,345.83
  5. Step 5: Solve for x
    x = 347,974,345.83/19,145.76
  6. Step 6: Final answer
    x = 18,175.01

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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.