Home / 19,256.78-28,886.20-5,406.86

Finding the Fourth Proportional to 19,256.78, 28,886.20 and 5,406.86

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Solution

The fourth proportional to 19,256.78, 28,886.20 and 5,406.86 is: 8,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,256.78 : 28,886.20 = 5,406.86 : x
  2. Step 2: Convert to fraction form
    19,256.78/28,886.20 = 5,406.86/x
  3. Step 3: Cross multiply
    19,256.78x = 28,886.20 × 5,406.86
  4. Step 4: Simplify right side
    19,256.78x = 156,183,639.33
  5. Step 5: Solve for x
    x = 156,183,639.33/19,256.78
  6. Step 6: Final answer
    x = 8,110.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.