Home / 13,688.13-20,532.18-3,826.17

Finding the Fourth Proportional to 13,688.13, 20,532.18 and 3,826.17

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Solution

The fourth proportional to 13,688.13, 20,532.18 and 3,826.17 is: 5,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.13 : 20,532.18 = 3,826.17 : x
  2. Step 2: Convert to fraction form
    13,688.13/20,532.18 = 3,826.17/x
  3. Step 3: Cross multiply
    13,688.13x = 20,532.18 × 3,826.17
  4. Step 4: Simplify right side
    13,688.13x = 78,559,611.15
  5. Step 5: Solve for x
    x = 78,559,611.15/13,688.13
  6. Step 6: Final answer
    x = 5,739.25

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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.