Home / 9,521.20-13,138.61-5,271.96

Finding the Fourth Proportional to 9,521.20, 13,138.61 and 5,271.96

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Solution

The fourth proportional to 9,521.20, 13,138.61 and 5,271.96 is: 7,274.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.20 : 13,138.61 = 5,271.96 : x
  2. Step 2: Convert to fraction form
    9,521.20/13,138.61 = 5,271.96/x
  3. Step 3: Cross multiply
    9,521.20x = 13,138.61 × 5,271.96
  4. Step 4: Simplify right side
    9,521.20x = 69,266,239.56
  5. Step 5: Solve for x
    x = 69,266,239.56/9,521.20
  6. Step 6: Final answer
    x = 7,274.95

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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.