Home / 19,142.68-28,728.06-12,566.56

Finding the Fourth Proportional to 19,142.68, 28,728.06 and 12,566.56

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Solution

The fourth proportional to 19,142.68, 28,728.06 and 12,566.56 is: 18,859.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.68 : 28,728.06 = 12,566.56 : x
  2. Step 2: Convert to fraction form
    19,142.68/28,728.06 = 12,566.56/x
  3. Step 3: Cross multiply
    19,142.68x = 28,728.06 × 12,566.56
  4. Step 4: Simplify right side
    19,142.68x = 361,012,889.67
  5. Step 5: Solve for x
    x = 361,012,889.67/19,142.68
  6. Step 6: Final answer
    x = 18,859.06

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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.