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Finding the Fourth Proportional to 14,009.61, 20,992.50 and 11,921.03

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Solution

The fourth proportional to 14,009.61, 20,992.50 and 11,921.03 is: 17,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.61 : 20,992.50 = 11,921.03 : x
  2. Step 2: Convert to fraction form
    14,009.61/20,992.50 = 11,921.03/x
  3. Step 3: Cross multiply
    14,009.61x = 20,992.50 × 11,921.03
  4. Step 4: Simplify right side
    14,009.61x = 250,252,222.28
  5. Step 5: Solve for x
    x = 250,252,222.28/14,009.61
  6. Step 6: Final answer
    x = 17,862.90

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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.