Home / 10,939.63-15,096.30-6,403.28

Finding the Fourth Proportional to 10,939.63, 15,096.30 and 6,403.28

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Solution

The fourth proportional to 10,939.63, 15,096.30 and 6,403.28 is: 8,836.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.63 : 15,096.30 = 6,403.28 : x
  2. Step 2: Convert to fraction form
    10,939.63/15,096.30 = 6,403.28/x
  3. Step 3: Cross multiply
    10,939.63x = 15,096.30 × 6,403.28
  4. Step 4: Simplify right side
    10,939.63x = 96,665,796.84
  5. Step 5: Solve for x
    x = 96,665,796.84/10,939.63
  6. Step 6: Final answer
    x = 8,836.29

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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.