Home / 13,788.37-20,685.79-3,927.79

Finding the Fourth Proportional to 13,788.37, 20,685.79 and 3,927.79

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Solution

The fourth proportional to 13,788.37, 20,685.79 and 3,927.79 is: 5,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.37 : 20,685.79 = 3,927.79 : x
  2. Step 2: Convert to fraction form
    13,788.37/20,685.79 = 3,927.79/x
  3. Step 3: Cross multiply
    13,788.37x = 20,685.79 × 3,927.79
  4. Step 4: Simplify right side
    13,788.37x = 81,249,335.68
  5. Step 5: Solve for x
    x = 81,249,335.68/13,788.37
  6. Step 6: Final answer
    x = 5,892.60

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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.