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Finding the Fourth Proportional to 17,911.76, 24,719.80 and 9,955.60

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Solution

The fourth proportional to 17,911.76, 24,719.80 and 9,955.60 is: 13,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.76 : 24,719.80 = 9,955.60 : x
  2. Step 2: Convert to fraction form
    17,911.76/24,719.80 = 9,955.60/x
  3. Step 3: Cross multiply
    17,911.76x = 24,719.80 × 9,955.60
  4. Step 4: Simplify right side
    17,911.76x = 246,100,440.88
  5. Step 5: Solve for x
    x = 246,100,440.88/17,911.76
  6. Step 6: Final answer
    x = 13,739.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.