Home / 13,120.36-19,679.34-4,356.28

Finding the Fourth Proportional to 13,120.36, 19,679.34 and 4,356.28

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Solution

The fourth proportional to 13,120.36, 19,679.34 and 4,356.28 is: 6,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.36 : 19,679.34 = 4,356.28 : x
  2. Step 2: Convert to fraction form
    13,120.36/19,679.34 = 4,356.28/x
  3. Step 3: Cross multiply
    13,120.36x = 19,679.34 × 4,356.28
  4. Step 4: Simplify right side
    13,120.36x = 85,728,715.26
  5. Step 5: Solve for x
    x = 85,728,715.26/13,120.36
  6. Step 6: Final answer
    x = 6,534.02

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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.