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Finding the Fourth Proportional to 13,273.40, 19,939.80 and 11,086.40

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Solution

The fourth proportional to 13,273.40, 19,939.80 and 11,086.40 is: 16,654.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,273.40 : 19,939.80 = 11,086.40 : x
  2. Step 2: Convert to fraction form
    13,273.40/19,939.80 = 11,086.40/x
  3. Step 3: Cross multiply
    13,273.40x = 19,939.80 × 11,086.40
  4. Step 4: Simplify right side
    13,273.40x = 221,060,598.72
  5. Step 5: Solve for x
    x = 221,060,598.72/13,273.40
  6. Step 6: Final answer
    x = 16,654.41

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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.