Home / 13,320.45-18,382.41-7,352.10

Finding the Fourth Proportional to 13,320.45, 18,382.41 and 7,352.10

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Solution

The fourth proportional to 13,320.45, 18,382.41 and 7,352.10 is: 10,146.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.45 : 18,382.41 = 7,352.10 : x
  2. Step 2: Convert to fraction form
    13,320.45/18,382.41 = 7,352.10/x
  3. Step 3: Cross multiply
    13,320.45x = 18,382.41 × 7,352.10
  4. Step 4: Simplify right side
    13,320.45x = 135,149,316.56
  5. Step 5: Solve for x
    x = 135,149,316.56/13,320.45
  6. Step 6: Final answer
    x = 10,146.00

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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.