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Finding the Fourth Proportional to 12,051.79, 16,630.92 and 8,471.99

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Solution

The fourth proportional to 12,051.79, 16,630.92 and 8,471.99 is: 11,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,051.79 : 16,630.92 = 8,471.99 : x
  2. Step 2: Convert to fraction form
    12,051.79/16,630.92 = 8,471.99/x
  3. Step 3: Cross multiply
    12,051.79x = 16,630.92 × 8,471.99
  4. Step 4: Simplify right side
    12,051.79x = 140,897,029.51
  5. Step 5: Solve for x
    x = 140,897,029.51/12,051.79
  6. Step 6: Final answer
    x = 11,690.97

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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.