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Finding the Fourth Proportional to 19,840.76, 29,760.24 and 8,744.48

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Solution

The fourth proportional to 19,840.76, 29,760.24 and 8,744.48 is: 13,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.76 : 29,760.24 = 8,744.48 : x
  2. Step 2: Convert to fraction form
    19,840.76/29,760.24 = 8,744.48/x
  3. Step 3: Cross multiply
    19,840.76x = 29,760.24 × 8,744.48
  4. Step 4: Simplify right side
    19,840.76x = 260,237,823.48
  5. Step 5: Solve for x
    x = 260,237,823.48/19,840.76
  6. Step 6: Final answer
    x = 13,116.32

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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.