Home / 28,406.11-39,202.16-15,830.83

Finding the Fourth Proportional to 28,406.11, 39,202.16 and 15,830.83

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Solution

The fourth proportional to 28,406.11, 39,202.16 and 15,830.83 is: 21,847.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.11 : 39,202.16 = 15,830.83 : x
  2. Step 2: Convert to fraction form
    28,406.11/39,202.16 = 15,830.83/x
  3. Step 3: Cross multiply
    28,406.11x = 39,202.16 × 15,830.83
  4. Step 4: Simplify right side
    28,406.11x = 620,602,730.59
  5. Step 5: Solve for x
    x = 620,602,730.59/28,406.11
  6. Step 6: Final answer
    x = 21,847.51

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Similar ratio
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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.