Home / 28,344.62-39,115.59-15,769.38

Finding the Fourth Proportional to 28,344.62, 39,115.59 and 15,769.38

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Solution

The fourth proportional to 28,344.62, 39,115.59 and 15,769.38 is: 21,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.62 : 39,115.59 = 15,769.38 : x
  2. Step 2: Convert to fraction form
    28,344.62/39,115.59 = 15,769.38/x
  3. Step 3: Cross multiply
    28,344.62x = 39,115.59 × 15,769.38
  4. Step 4: Simplify right side
    28,344.62x = 616,828,602.63
  5. Step 5: Solve for x
    x = 616,828,602.63/28,344.62
  6. Step 6: Final answer
    x = 21,761.75

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1.5x scale

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.