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Finding the Fourth Proportional to 19,750.76, 29,633.06 and 8,656

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Solution

The fourth proportional to 19,750.76, 29,633.06 and 8,656 is: 12,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,750.76 : 29,633.06 = 8,656 : x
  2. Step 2: Convert to fraction form
    19,750.76/29,633.06 = 8,656/x
  3. Step 3: Cross multiply
    19,750.76x = 29,633.06 × 8,656
  4. Step 4: Simplify right side
    19,750.76x = 256,503,767.36
  5. Step 5: Solve for x
    x = 256,503,767.36/19,750.76
  6. Step 6: Final answer
    x = 12,987.03

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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.