Home / 12,921.41-19,390.32-5,532.09

Finding the Fourth Proportional to 12,921.41, 19,390.32 and 5,532.09

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Solution

The fourth proportional to 12,921.41, 19,390.32 and 5,532.09 is: 8,301.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.41 : 19,390.32 = 5,532.09 : x
  2. Step 2: Convert to fraction form
    12,921.41/19,390.32 = 5,532.09/x
  3. Step 3: Cross multiply
    12,921.41x = 19,390.32 × 5,532.09
  4. Step 4: Simplify right side
    12,921.41x = 107,268,995.37
  5. Step 5: Solve for x
    x = 107,268,995.37/12,921.41
  6. Step 6: Final answer
    x = 8,301.65

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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.