Home / 13,893.36-20,830.24-5,127.12

Finding the Fourth Proportional to 13,893.36, 20,830.24 and 5,127.12

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Solution

The fourth proportional to 13,893.36, 20,830.24 and 5,127.12 is: 7,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.36 : 20,830.24 = 5,127.12 : x
  2. Step 2: Convert to fraction form
    13,893.36/20,830.24 = 5,127.12/x
  3. Step 3: Cross multiply
    13,893.36x = 20,830.24 × 5,127.12
  4. Step 4: Simplify right side
    13,893.36x = 106,799,140.11
  5. Step 5: Solve for x
    x = 106,799,140.11/13,893.36
  6. Step 6: Final answer
    x = 7,687.06

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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.