Home / 28,639.46-39,521.42-15,893.20

Finding the Fourth Proportional to 28,639.46, 39,521.42 and 15,893.20

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Solution

The fourth proportional to 28,639.46, 39,521.42 and 15,893.20 is: 21,932.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.46 : 39,521.42 = 15,893.20 : x
  2. Step 2: Convert to fraction form
    28,639.46/39,521.42 = 15,893.20/x
  3. Step 3: Cross multiply
    28,639.46x = 39,521.42 × 15,893.20
  4. Step 4: Simplify right side
    28,639.46x = 628,121,555.27
  5. Step 5: Solve for x
    x = 628,121,555.27/28,639.46
  6. Step 6: Final answer
    x = 21,932.04

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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.