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Finding the Fourth Proportional to 19,754.64, 29,637.96 and 8,656.08

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Solution

The fourth proportional to 19,754.64, 29,637.96 and 8,656.08 is: 12,986.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,754.64 : 29,637.96 = 8,656.08 : x
  2. Step 2: Convert to fraction form
    19,754.64/29,637.96 = 8,656.08/x
  3. Step 3: Cross multiply
    19,754.64x = 29,637.96 × 8,656.08
  4. Step 4: Simplify right side
    19,754.64x = 256,548,552.80
  5. Step 5: Solve for x
    x = 256,548,552.80/19,754.64
  6. Step 6: Final answer
    x = 12,986.75

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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.