Home / 13,647.17-20,428.37-7,391.64

Finding the Fourth Proportional to 13,647.17, 20,428.37 and 7,391.64

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Solution

The fourth proportional to 13,647.17, 20,428.37 and 7,391.64 is: 11,064.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.17 : 20,428.37 = 7,391.64 : x
  2. Step 2: Convert to fraction form
    13,647.17/20,428.37 = 7,391.64/x
  3. Step 3: Cross multiply
    13,647.17x = 20,428.37 × 7,391.64
  4. Step 4: Simplify right side
    13,647.17x = 150,999,175.31
  5. Step 5: Solve for x
    x = 150,999,175.31/13,647.17
  6. Step 6: Final answer
    x = 11,064.51

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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.