Home / 12,661.58-18,997.48-5,636.79

Finding the Fourth Proportional to 12,661.58, 18,997.48 and 5,636.79

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Solution

The fourth proportional to 12,661.58, 18,997.48 and 5,636.79 is: 8,457.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.58 : 18,997.48 = 5,636.79 : x
  2. Step 2: Convert to fraction form
    12,661.58/18,997.48 = 5,636.79/x
  3. Step 3: Cross multiply
    12,661.58x = 18,997.48 × 5,636.79
  4. Step 4: Simplify right side
    12,661.58x = 107,084,805.29
  5. Step 5: Solve for x
    x = 107,084,805.29/12,661.58
  6. Step 6: Final answer
    x = 8,457.46

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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.