Home / 12,664.32-18,991.60-5,646.48

Finding the Fourth Proportional to 12,664.32, 18,991.60 and 5,646.48

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Solution

The fourth proportional to 12,664.32, 18,991.60 and 5,646.48 is: 8,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.32 : 18,991.60 = 5,646.48 : x
  2. Step 2: Convert to fraction form
    12,664.32/18,991.60 = 5,646.48/x
  3. Step 3: Cross multiply
    12,664.32x = 18,991.60 × 5,646.48
  4. Step 4: Simplify right side
    12,664.32x = 107,235,689.57
  5. Step 5: Solve for x
    x = 107,235,689.57/12,664.32
  6. Step 6: Final answer
    x = 8,467.54

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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.