Home / 28,636.93-39,519.18-15,890.16

Finding the Fourth Proportional to 28,636.93, 39,519.18 and 15,890.16

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Solution

The fourth proportional to 28,636.93, 39,519.18 and 15,890.16 is: 21,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.93 : 39,519.18 = 15,890.16 : x
  2. Step 2: Convert to fraction form
    28,636.93/39,519.18 = 15,890.16/x
  3. Step 3: Cross multiply
    28,636.93x = 39,519.18 × 15,890.16
  4. Step 4: Simplify right side
    28,636.93x = 627,966,181.88
  5. Step 5: Solve for x
    x = 627,966,181.88/28,636.93
  6. Step 6: Final answer
    x = 21,928.54

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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.