Home / 13,317.21-20,003.36-12,874.55

Finding the Fourth Proportional to 13,317.21, 20,003.36 and 12,874.55

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Solution

The fourth proportional to 13,317.21, 20,003.36 and 12,874.55 is: 19,338.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.21 : 20,003.36 = 12,874.55 : x
  2. Step 2: Convert to fraction form
    13,317.21/20,003.36 = 12,874.55/x
  3. Step 3: Cross multiply
    13,317.21x = 20,003.36 × 12,874.55
  4. Step 4: Simplify right side
    13,317.21x = 257,534,094.10
  5. Step 5: Solve for x
    x = 257,534,094.10/13,317.21
  6. Step 6: Final answer
    x = 19,338.44

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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.