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Finding the Fourth Proportional to 14,676.42, 21,959.74 and 8,731.63

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Solution

The fourth proportional to 14,676.42, 21,959.74 and 8,731.63 is: 13,064.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,676.42 : 21,959.74 = 8,731.63 : x
  2. Step 2: Convert to fraction form
    14,676.42/21,959.74 = 8,731.63/x
  3. Step 3: Cross multiply
    14,676.42x = 21,959.74 × 8,731.63
  4. Step 4: Simplify right side
    14,676.42x = 191,744,362.94
  5. Step 5: Solve for x
    x = 191,744,362.94/14,676.42
  6. Step 6: Final answer
    x = 13,064.79

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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.