Home / 11,271.11-15,555.30-6,491.21

Finding the Fourth Proportional to 11,271.11, 15,555.30 and 6,491.21

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Solution

The fourth proportional to 11,271.11, 15,555.30 and 6,491.21 is: 8,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.11 : 15,555.30 = 6,491.21 : x
  2. Step 2: Convert to fraction form
    11,271.11/15,555.30 = 6,491.21/x
  3. Step 3: Cross multiply
    11,271.11x = 15,555.30 × 6,491.21
  4. Step 4: Simplify right side
    11,271.11x = 100,972,686.46
  5. Step 5: Solve for x
    x = 100,972,686.46/11,271.11
  6. Step 6: Final answer
    x = 8,958.54

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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.