Home / 10,939.81-15,088.31-8,260.03

Finding the Fourth Proportional to 10,939.81, 15,088.31 and 8,260.03

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Solution

The fourth proportional to 10,939.81, 15,088.31 and 8,260.03 is: 11,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.81 : 15,088.31 = 8,260.03 : x
  2. Step 2: Convert to fraction form
    10,939.81/15,088.31 = 8,260.03/x
  3. Step 3: Cross multiply
    10,939.81x = 15,088.31 × 8,260.03
  4. Step 4: Simplify right side
    10,939.81x = 124,629,817.81
  5. Step 5: Solve for x
    x = 124,629,817.81/10,939.81
  6. Step 6: Final answer
    x = 11,392.33

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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.