Home / 9,520.80-13,138.26-5,271.56

Finding the Fourth Proportional to 9,520.80, 13,138.26 and 5,271.56

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Solution

The fourth proportional to 9,520.80, 13,138.26 and 5,271.56 is: 7,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.80 : 13,138.26 = 5,271.56 : x
  2. Step 2: Convert to fraction form
    9,520.80/13,138.26 = 5,271.56/x
  3. Step 3: Cross multiply
    9,520.80x = 13,138.26 × 5,271.56
  4. Step 4: Simplify right side
    9,520.80x = 69,259,125.89
  5. Step 5: Solve for x
    x = 69,259,125.89/9,520.80
  6. Step 6: Final answer
    x = 7,274.51

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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.