Home / 9,099.40-12,556.15-5,120.43

Finding the Fourth Proportional to 9,099.40, 12,556.15 and 5,120.43

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Solution

The fourth proportional to 9,099.40, 12,556.15 and 5,120.43 is: 7,065.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,099.40 : 12,556.15 = 5,120.43 : x
  2. Step 2: Convert to fraction form
    9,099.40/12,556.15 = 5,120.43/x
  3. Step 3: Cross multiply
    9,099.40x = 12,556.15 × 5,120.43
  4. Step 4: Simplify right side
    9,099.40x = 64,292,887.14
  5. Step 5: Solve for x
    x = 64,292,887.14/9,099.40
  6. Step 6: Final answer
    x = 7,065.62

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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.