Home / 9,620.40-13,260.60-7,849.20

Finding the Fourth Proportional to 9,620.40, 13,260.60 and 7,849.20

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Solution

The fourth proportional to 9,620.40, 13,260.60 and 7,849.20 is: 10,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.40 : 13,260.60 = 7,849.20 : x
  2. Step 2: Convert to fraction form
    9,620.40/13,260.60 = 7,849.20/x
  3. Step 3: Cross multiply
    9,620.40x = 13,260.60 × 7,849.20
  4. Step 4: Simplify right side
    9,620.40x = 104,085,101.52
  5. Step 5: Solve for x
    x = 104,085,101.52/9,620.40
  6. Step 6: Final answer
    x = 10,819.21

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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.