Home / 13,764.40-20,646.78-5,440.84

Finding the Fourth Proportional to 13,764.40, 20,646.78 and 5,440.84

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Solution

The fourth proportional to 13,764.40, 20,646.78 and 5,440.84 is: 8,161.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.40 : 20,646.78 = 5,440.84 : x
  2. Step 2: Convert to fraction form
    13,764.40/20,646.78 = 5,440.84/x
  3. Step 3: Cross multiply
    13,764.40x = 20,646.78 × 5,440.84
  4. Step 4: Simplify right side
    13,764.40x = 112,335,826.50
  5. Step 5: Solve for x
    x = 112,335,826.50/13,764.40
  6. Step 6: Final answer
    x = 8,161.33

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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.