Home / 13,165.20-18,183.39-10,485.45

Finding the Fourth Proportional to 13,165.20, 18,183.39 and 10,485.45

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Solution

The fourth proportional to 13,165.20, 18,183.39 and 10,485.45 is: 14,482.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.20 : 18,183.39 = 10,485.45 : x
  2. Step 2: Convert to fraction form
    13,165.20/18,183.39 = 10,485.45/x
  3. Step 3: Cross multiply
    13,165.20x = 18,183.39 × 10,485.45
  4. Step 4: Simplify right side
    13,165.20x = 190,661,026.68
  5. Step 5: Solve for x
    x = 190,661,026.68/13,165.20
  6. Step 6: Final answer
    x = 14,482.20

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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.