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Finding the Fourth Proportional to 19,761.69, 29,652.77 and 8,676.17

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Solution

The fourth proportional to 19,761.69, 29,652.77 and 8,676.17 is: 13,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.69 : 29,652.77 = 8,676.17 : x
  2. Step 2: Convert to fraction form
    19,761.69/29,652.77 = 8,676.17/x
  3. Step 3: Cross multiply
    19,761.69x = 29,652.77 × 8,676.17
  4. Step 4: Simplify right side
    19,761.69x = 257,272,473.49
  5. Step 5: Solve for x
    x = 257,272,473.49/19,761.69
  6. Step 6: Final answer
    x = 13,018.75

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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.