Home / 12,685.63-19,025.36-5,286.05

Finding the Fourth Proportional to 12,685.63, 19,025.36 and 5,286.05

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Solution

The fourth proportional to 12,685.63, 19,025.36 and 5,286.05 is: 7,927.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.63 : 19,025.36 = 5,286.05 : x
  2. Step 2: Convert to fraction form
    12,685.63/19,025.36 = 5,286.05/x
  3. Step 3: Cross multiply
    12,685.63x = 19,025.36 × 5,286.05
  4. Step 4: Simplify right side
    12,685.63x = 100,569,004.23
  5. Step 5: Solve for x
    x = 100,569,004.23/12,685.63
  6. Step 6: Final answer
    x = 7,927.79

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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.