Home / 12,185.68-18,274.80-5,165.56

Finding the Fourth Proportional to 12,185.68, 18,274.80 and 5,165.56

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Solution

The fourth proportional to 12,185.68, 18,274.80 and 5,165.56 is: 7,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.68 : 18,274.80 = 5,165.56 : x
  2. Step 2: Convert to fraction form
    12,185.68/18,274.80 = 5,165.56/x
  3. Step 3: Cross multiply
    12,185.68x = 18,274.80 × 5,165.56
  4. Step 4: Simplify right side
    12,185.68x = 94,399,621.58
  5. Step 5: Solve for x
    x = 94,399,621.58/12,185.68
  6. Step 6: Final answer
    x = 7,746.77

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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.