Home / 15,939.05-21,995.90-8,769.06

Finding the Fourth Proportional to 15,939.05, 21,995.90 and 8,769.06

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Solution

The fourth proportional to 15,939.05, 21,995.90 and 8,769.06 is: 12,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.05 : 21,995.90 = 8,769.06 : x
  2. Step 2: Convert to fraction form
    15,939.05/21,995.90 = 8,769.06/x
  3. Step 3: Cross multiply
    15,939.05x = 21,995.90 × 8,769.06
  4. Step 4: Simplify right side
    15,939.05x = 192,883,323.01
  5. Step 5: Solve for x
    x = 192,883,323.01/15,939.05
  6. Step 6: Final answer
    x = 12,101.31

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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.