Home / 11,970.48-16,518.81-6,665.79

Finding the Fourth Proportional to 11,970.48, 16,518.81 and 6,665.79

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Solution

The fourth proportional to 11,970.48, 16,518.81 and 6,665.79 is: 9,198.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.48 : 16,518.81 = 6,665.79 : x
  2. Step 2: Convert to fraction form
    11,970.48/16,518.81 = 6,665.79/x
  3. Step 3: Cross multiply
    11,970.48x = 16,518.81 × 6,665.79
  4. Step 4: Simplify right side
    11,970.48x = 110,110,918.51
  5. Step 5: Solve for x
    x = 110,110,918.51/11,970.48
  6. Step 6: Final answer
    x = 9,198.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.