Home / 28,240.62-38,973.88-15,665.38

Finding the Fourth Proportional to 28,240.62, 38,973.88 and 15,665.38

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Solution

The fourth proportional to 28,240.62, 38,973.88 and 15,665.38 is: 21,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.62 : 38,973.88 = 15,665.38 : x
  2. Step 2: Convert to fraction form
    28,240.62/38,973.88 = 15,665.38/x
  3. Step 3: Cross multiply
    28,240.62x = 38,973.88 × 15,665.38
  4. Step 4: Simplify right side
    28,240.62x = 610,540,640.27
  5. Step 5: Solve for x
    x = 610,540,640.27/28,240.62
  6. Step 6: Final answer
    x = 21,619.24

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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.