Home / 12,665.48-18,997.08-5,645.84

Finding the Fourth Proportional to 12,665.48, 18,997.08 and 5,645.84

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Solution

The fourth proportional to 12,665.48, 18,997.08 and 5,645.84 is: 8,468.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.48 : 18,997.08 = 5,645.84 : x
  2. Step 2: Convert to fraction form
    12,665.48/18,997.08 = 5,645.84/x
  3. Step 3: Cross multiply
    12,665.48x = 18,997.08 × 5,645.84
  4. Step 4: Simplify right side
    12,665.48x = 107,254,474.15
  5. Step 5: Solve for x
    x = 107,254,474.15/12,665.48
  6. Step 6: Final answer
    x = 8,468.25

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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.