Home / 13,856.20-20,784.42-3,995.50

Finding the Fourth Proportional to 13,856.20, 20,784.42 and 3,995.50

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Solution

The fourth proportional to 13,856.20, 20,784.42 and 3,995.50 is: 5,993.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.20 : 20,784.42 = 3,995.50 : x
  2. Step 2: Convert to fraction form
    13,856.20/20,784.42 = 3,995.50/x
  3. Step 3: Cross multiply
    13,856.20x = 20,784.42 × 3,995.50
  4. Step 4: Simplify right side
    13,856.20x = 83,044,150.11
  5. Step 5: Solve for x
    x = 83,044,150.11/13,856.20
  6. Step 6: Final answer
    x = 5,993.28

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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.