Home / 13,153.20-18,158.04-8,683.44

Finding the Fourth Proportional to 13,153.20, 18,158.04 and 8,683.44

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Solution

The fourth proportional to 13,153.20, 18,158.04 and 8,683.44 is: 11,987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.20 : 18,158.04 = 8,683.44 : x
  2. Step 2: Convert to fraction form
    13,153.20/18,158.04 = 8,683.44/x
  3. Step 3: Cross multiply
    13,153.20x = 18,158.04 × 8,683.44
  4. Step 4: Simplify right side
    13,153.20x = 157,674,250.86
  5. Step 5: Solve for x
    x = 157,674,250.86/13,153.20
  6. Step 6: Final answer
    x = 11,987.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.