Home / 19,390.16-26,761.88-11,431.92

Finding the Fourth Proportional to 19,390.16, 26,761.88 and 11,431.92

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Solution

The fourth proportional to 19,390.16, 26,761.88 and 11,431.92 is: 15,778.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.16 : 26,761.88 = 11,431.92 : x
  2. Step 2: Convert to fraction form
    19,390.16/26,761.88 = 11,431.92/x
  3. Step 3: Cross multiply
    19,390.16x = 26,761.88 × 11,431.92
  4. Step 4: Simplify right side
    19,390.16x = 305,939,671.21
  5. Step 5: Solve for x
    x = 305,939,671.21/19,390.16
  6. Step 6: Final answer
    x = 15,778.09

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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.