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Finding the Fourth Proportional to 15,939.93, 21,997.04 and 8,866.34

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Solution

The fourth proportional to 15,939.93, 21,997.04 and 8,866.34 is: 12,235.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.93 : 21,997.04 = 8,866.34 : x
  2. Step 2: Convert to fraction form
    15,939.93/21,997.04 = 8,866.34/x
  3. Step 3: Cross multiply
    15,939.93x = 21,997.04 × 8,866.34
  4. Step 4: Simplify right side
    15,939.93x = 195,033,081.32
  5. Step 5: Solve for x
    x = 195,033,081.32/15,939.93
  6. Step 6: Final answer
    x = 12,235.50

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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.