Home / 10,905.63-15,049.97-6,190.21

Finding the Fourth Proportional to 10,905.63, 15,049.97 and 6,190.21

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Solution

The fourth proportional to 10,905.63, 15,049.97 and 6,190.21 is: 8,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.63 : 15,049.97 = 6,190.21 : x
  2. Step 2: Convert to fraction form
    10,905.63/15,049.97 = 6,190.21/x
  3. Step 3: Cross multiply
    10,905.63x = 15,049.97 × 6,190.21
  4. Step 4: Simplify right side
    10,905.63x = 93,162,474.79
  5. Step 5: Solve for x
    x = 93,162,474.79/10,905.63
  6. Step 6: Final answer
    x = 8,542.60

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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.