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Finding the Fourth Proportional to 21,060.94, 29,064.09 and 12,110.20

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Solution

The fourth proportional to 21,060.94, 29,064.09 and 12,110.20 is: 16,712.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.94 : 29,064.09 = 12,110.20 : x
  2. Step 2: Convert to fraction form
    21,060.94/29,064.09 = 12,110.20/x
  3. Step 3: Cross multiply
    21,060.94x = 29,064.09 × 12,110.20
  4. Step 4: Simplify right side
    21,060.94x = 351,971,942.72
  5. Step 5: Solve for x
    x = 351,971,942.72/21,060.94
  6. Step 6: Final answer
    x = 16,712.07

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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.