Home / 20,363.64-28,102.88-11,410.60

Finding the Fourth Proportional to 20,363.64, 28,102.88 and 11,410.60

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Solution

The fourth proportional to 20,363.64, 28,102.88 and 11,410.60 is: 15,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.64 : 28,102.88 = 11,410.60 : x
  2. Step 2: Convert to fraction form
    20,363.64/28,102.88 = 11,410.60/x
  3. Step 3: Cross multiply
    20,363.64x = 28,102.88 × 11,410.60
  4. Step 4: Simplify right side
    20,363.64x = 320,670,722.53
  5. Step 5: Solve for x
    x = 320,670,722.53/20,363.64
  6. Step 6: Final answer
    x = 15,747.22

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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.