Home / 9,521.20-13,138.50-5,542.48

Finding the Fourth Proportional to 9,521.20, 13,138.50 and 5,542.48

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Solution

The fourth proportional to 9,521.20, 13,138.50 and 5,542.48 is: 7,648.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.20 : 13,138.50 = 5,542.48 : x
  2. Step 2: Convert to fraction form
    9,521.20/13,138.50 = 5,542.48/x
  3. Step 3: Cross multiply
    9,521.20x = 13,138.50 × 5,542.48
  4. Step 4: Simplify right side
    9,521.20x = 72,819,873.48
  5. Step 5: Solve for x
    x = 72,819,873.48/9,521.20
  6. Step 6: Final answer
    x = 7,648.18

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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.