Home / 13,321.08-18,382.84-7,352.40

Finding the Fourth Proportional to 13,321.08, 18,382.84 and 7,352.40

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Solution

The fourth proportional to 13,321.08, 18,382.84 and 7,352.40 is: 10,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.08 : 18,382.84 = 7,352.40 : x
  2. Step 2: Convert to fraction form
    13,321.08/18,382.84 = 7,352.40/x
  3. Step 3: Cross multiply
    13,321.08x = 18,382.84 × 7,352.40
  4. Step 4: Simplify right side
    13,321.08x = 135,157,992.82
  5. Step 5: Solve for x
    x = 135,157,992.82/13,321.08
  6. Step 6: Final answer
    x = 10,146.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.