Home / 15,939.09-21,995.62-8,865.36

Finding the Fourth Proportional to 15,939.09, 21,995.62 and 8,865.36

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Solution

The fourth proportional to 15,939.09, 21,995.62 and 8,865.36 is: 12,234.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.09 : 21,995.62 = 8,865.36 : x
  2. Step 2: Convert to fraction form
    15,939.09/21,995.62 = 8,865.36/x
  3. Step 3: Cross multiply
    15,939.09x = 21,995.62 × 8,865.36
  4. Step 4: Simplify right side
    15,939.09x = 194,999,089.72
  5. Step 5: Solve for x
    x = 194,999,089.72/15,939.09
  6. Step 6: Final answer
    x = 12,234.02

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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.