Home / 20,147.76-27,813.06-13,784.58

Finding the Fourth Proportional to 20,147.76, 27,813.06 and 13,784.58

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Solution

The fourth proportional to 20,147.76, 27,813.06 and 13,784.58 is: 19,028.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.76 : 27,813.06 = 13,784.58 : x
  2. Step 2: Convert to fraction form
    20,147.76/27,813.06 = 13,784.58/x
  3. Step 3: Cross multiply
    20,147.76x = 27,813.06 × 13,784.58
  4. Step 4: Simplify right side
    20,147.76x = 383,391,350.61
  5. Step 5: Solve for x
    x = 383,391,350.61/20,147.76
  6. Step 6: Final answer
    x = 19,028.98

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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.