Home / 28,704.72-39,612.99-15,784.54

Finding the Fourth Proportional to 28,704.72, 39,612.99 and 15,784.54

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Solution

The fourth proportional to 28,704.72, 39,612.99 and 15,784.54 is: 21,782.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,704.72 : 39,612.99 = 15,784.54 : x
  2. Step 2: Convert to fraction form
    28,704.72/39,612.99 = 15,784.54/x
  3. Step 3: Cross multiply
    28,704.72x = 39,612.99 × 15,784.54
  4. Step 4: Simplify right side
    28,704.72x = 625,272,825.17
  5. Step 5: Solve for x
    x = 625,272,825.17/28,704.72
  6. Step 6: Final answer
    x = 21,782.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.