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Finding the Fourth Proportional to 11,573.72, 17,383.64 and 10,920.92

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Solution

The fourth proportional to 11,573.72, 17,383.64 and 10,920.92 is: 16,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,573.72 : 17,383.64 = 10,920.92 : x
  2. Step 2: Convert to fraction form
    11,573.72/17,383.64 = 10,920.92/x
  3. Step 3: Cross multiply
    11,573.72x = 17,383.64 × 10,920.92
  4. Step 4: Simplify right side
    11,573.72x = 189,845,412.51
  5. Step 5: Solve for x
    x = 189,845,412.51/11,573.72
  6. Step 6: Final answer
    x = 16,403.15

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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.