Home / 8,683.20-13,019.80-7,645.30

Finding the Fourth Proportional to 8,683.20, 13,019.80 and 7,645.30

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Solution

The fourth proportional to 8,683.20, 13,019.80 and 7,645.30 is: 11,463.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.20 : 13,019.80 = 7,645.30 : x
  2. Step 2: Convert to fraction form
    8,683.20/13,019.80 = 7,645.30/x
  3. Step 3: Cross multiply
    8,683.20x = 13,019.80 × 7,645.30
  4. Step 4: Simplify right side
    8,683.20x = 99,540,276.94
  5. Step 5: Solve for x
    x = 99,540,276.94/8,683.20
  6. Step 6: Final answer
    x = 11,463.55

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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.