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Finding the Fourth Proportional to 11,289.68, 16,918.73 and 9,615.09

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Solution

The fourth proportional to 11,289.68, 16,918.73 and 9,615.09 is: 14,409.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.68 : 16,918.73 = 9,615.09 : x
  2. Step 2: Convert to fraction form
    11,289.68/16,918.73 = 9,615.09/x
  3. Step 3: Cross multiply
    11,289.68x = 16,918.73 × 9,615.09
  4. Step 4: Simplify right side
    11,289.68x = 162,675,111.64
  5. Step 5: Solve for x
    x = 162,675,111.64/11,289.68
  6. Step 6: Final answer
    x = 14,409.19

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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.