Home / 28,354.07-39,128.72-15,608.52

Finding the Fourth Proportional to 28,354.07, 39,128.72 and 15,608.52

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Solution

The fourth proportional to 28,354.07, 39,128.72 and 15,608.52 is: 21,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.07 : 39,128.72 = 15,608.52 : x
  2. Step 2: Convert to fraction form
    28,354.07/39,128.72 = 15,608.52/x
  3. Step 3: Cross multiply
    28,354.07x = 39,128.72 × 15,608.52
  4. Step 4: Simplify right side
    28,354.07x = 610,741,330.65
  5. Step 5: Solve for x
    x = 610,741,330.65/28,354.07
  6. Step 6: Final answer
    x = 21,539.82

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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.