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Finding the Fourth Proportional to 14,271.78, 19,695.03 and 8,682.78

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Solution

The fourth proportional to 14,271.78, 19,695.03 and 8,682.78 is: 11,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,271.78 : 19,695.03 = 8,682.78 : x
  2. Step 2: Convert to fraction form
    14,271.78/19,695.03 = 8,682.78/x
  3. Step 3: Cross multiply
    14,271.78x = 19,695.03 × 8,682.78
  4. Step 4: Simplify right side
    14,271.78x = 171,007,612.58
  5. Step 5: Solve for x
    x = 171,007,612.58/14,271.78
  6. Step 6: Final answer
    x = 11,982.22

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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.