Home / 13,410.78-20,129.67-5,625.06

Finding the Fourth Proportional to 13,410.78, 20,129.67 and 5,625.06

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Solution

The fourth proportional to 13,410.78, 20,129.67 and 5,625.06 is: 8,443.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.78 : 20,129.67 = 5,625.06 : x
  2. Step 2: Convert to fraction form
    13,410.78/20,129.67 = 5,625.06/x
  3. Step 3: Cross multiply
    13,410.78x = 20,129.67 × 5,625.06
  4. Step 4: Simplify right side
    13,410.78x = 113,230,601.53
  5. Step 5: Solve for x
    x = 113,230,601.53/13,410.78
  6. Step 6: Final answer
    x = 8,443.25

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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.