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Finding the Fourth Proportional to 19,102.64, 28,648.44 and 6,622.16

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Solution

The fourth proportional to 19,102.64, 28,648.44 and 6,622.16 is: 9,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,102.64 : 28,648.44 = 6,622.16 : x
  2. Step 2: Convert to fraction form
    19,102.64/28,648.44 = 6,622.16/x
  3. Step 3: Cross multiply
    19,102.64x = 28,648.44 × 6,622.16
  4. Step 4: Simplify right side
    19,102.64x = 189,714,410.19
  5. Step 5: Solve for x
    x = 189,714,410.19/19,102.64
  6. Step 6: Final answer
    x = 9,931.32

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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.