Home / 13,720.24-20,583.69-5,398.12

Finding the Fourth Proportional to 13,720.24, 20,583.69 and 5,398.12

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Solution

The fourth proportional to 13,720.24, 20,583.69 and 5,398.12 is: 8,098.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.24 : 20,583.69 = 5,398.12 : x
  2. Step 2: Convert to fraction form
    13,720.24/20,583.69 = 5,398.12/x
  3. Step 3: Cross multiply
    13,720.24x = 20,583.69 × 5,398.12
  4. Step 4: Simplify right side
    13,720.24x = 111,113,228.66
  5. Step 5: Solve for x
    x = 111,113,228.66/13,720.24
  6. Step 6: Final answer
    x = 8,098.49

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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.