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Finding the Fourth Proportional to 11,419.60, 17,100.60 and 10,901.20

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Solution

The fourth proportional to 11,419.60, 17,100.60 and 10,901.20 is: 16,324.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.60 : 17,100.60 = 10,901.20 : x
  2. Step 2: Convert to fraction form
    11,419.60/17,100.60 = 10,901.20/x
  3. Step 3: Cross multiply
    11,419.60x = 17,100.60 × 10,901.20
  4. Step 4: Simplify right side
    11,419.60x = 186,417,060.72
  5. Step 5: Solve for x
    x = 186,417,060.72/11,419.60
  6. Step 6: Final answer
    x = 16,324.31

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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.