Home / 11,085.84-16,664.40-8,918.64

Finding the Fourth Proportional to 11,085.84, 16,664.40 and 8,918.64

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Solution

The fourth proportional to 11,085.84, 16,664.40 and 8,918.64 is: 13,406.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,085.84 : 16,664.40 = 8,918.64 : x
  2. Step 2: Convert to fraction form
    11,085.84/16,664.40 = 8,918.64/x
  3. Step 3: Cross multiply
    11,085.84x = 16,664.40 × 8,918.64
  4. Step 4: Simplify right side
    11,085.84x = 148,623,784.42
  5. Step 5: Solve for x
    x = 148,623,784.42/11,085.84
  6. Step 6: Final answer
    x = 13,406.63

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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.