Home / 11,144.24-15,378.48-6,428.24

Finding the Fourth Proportional to 11,144.24, 15,378.48 and 6,428.24

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Solution

The fourth proportional to 11,144.24, 15,378.48 and 6,428.24 is: 8,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.24 : 15,378.48 = 6,428.24 : x
  2. Step 2: Convert to fraction form
    11,144.24/15,378.48 = 6,428.24/x
  3. Step 3: Cross multiply
    11,144.24x = 15,378.48 × 6,428.24
  4. Step 4: Simplify right side
    11,144.24x = 98,856,560.28
  5. Step 5: Solve for x
    x = 98,856,560.28/11,144.24
  6. Step 6: Final answer
    x = 8,870.64

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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.