Home / 13,856.97-20,785.47-3,468.72

Finding the Fourth Proportional to 13,856.97, 20,785.47 and 3,468.72

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Solution

The fourth proportional to 13,856.97, 20,785.47 and 3,468.72 is: 5,203.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.97 : 20,785.47 = 3,468.72 : x
  2. Step 2: Convert to fraction form
    13,856.97/20,785.47 = 3,468.72/x
  3. Step 3: Cross multiply
    13,856.97x = 20,785.47 × 3,468.72
  4. Step 4: Simplify right side
    13,856.97x = 72,098,975.50
  5. Step 5: Solve for x
    x = 72,098,975.50/13,856.97
  6. Step 6: Final answer
    x = 5,203.08

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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.