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Finding the Fourth Proportional to 15,939.84, 21,994.47 and 8,866.26

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Solution

The fourth proportional to 15,939.84, 21,994.47 and 8,866.26 is: 12,234.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.84 : 21,994.47 = 8,866.26 : x
  2. Step 2: Convert to fraction form
    15,939.84/21,994.47 = 8,866.26/x
  3. Step 3: Cross multiply
    15,939.84x = 21,994.47 × 8,866.26
  4. Step 4: Simplify right side
    15,939.84x = 195,008,689.58
  5. Step 5: Solve for x
    x = 195,008,689.58/15,939.84
  6. Step 6: Final answer
    x = 12,234.04

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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.