Home / 8,742.40-13,104.24-6,364.80

Finding the Fourth Proportional to 8,742.40, 13,104.24 and 6,364.80

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Solution

The fourth proportional to 8,742.40, 13,104.24 and 6,364.80 is: 9,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.40 : 13,104.24 = 6,364.80 : x
  2. Step 2: Convert to fraction form
    8,742.40/13,104.24 = 6,364.80/x
  3. Step 3: Cross multiply
    8,742.40x = 13,104.24 × 6,364.80
  4. Step 4: Simplify right side
    8,742.40x = 83,405,866.75
  5. Step 5: Solve for x
    x = 83,405,866.75/8,742.40
  6. Step 6: Final answer
    x = 9,540.39

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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.