Home / 19,171.83-26,479.28-12,787.33

Finding the Fourth Proportional to 19,171.83, 26,479.28 and 12,787.33

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Solution

The fourth proportional to 19,171.83, 26,479.28 and 12,787.33 is: 17,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.83 : 26,479.28 = 12,787.33 : x
  2. Step 2: Convert to fraction form
    19,171.83/26,479.28 = 12,787.33/x
  3. Step 3: Cross multiply
    19,171.83x = 26,479.28 × 12,787.33
  4. Step 4: Simplify right side
    19,171.83x = 338,599,227.59
  5. Step 5: Solve for x
    x = 338,599,227.59/19,171.83
  6. Step 6: Final answer
    x = 17,661.29

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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.