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Finding the Fourth Proportional to 13,216.88, 19,844.76 and 5,440.88

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Solution

The fourth proportional to 13,216.88, 19,844.76 and 5,440.88 is: 8,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.88 : 19,844.76 = 5,440.88 : x
  2. Step 2: Convert to fraction form
    13,216.88/19,844.76 = 5,440.88/x
  3. Step 3: Cross multiply
    13,216.88x = 19,844.76 × 5,440.88
  4. Step 4: Simplify right side
    13,216.88x = 107,972,957.79
  5. Step 5: Solve for x
    x = 107,972,957.79/13,216.88
  6. Step 6: Final answer
    x = 8,169.32

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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.