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Finding the Fourth Proportional to 11,765.70, 17,648.55 and 4,840.20

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Solution

The fourth proportional to 11,765.70, 17,648.55 and 4,840.20 is: 7,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.70 : 17,648.55 = 4,840.20 : x
  2. Step 2: Convert to fraction form
    11,765.70/17,648.55 = 4,840.20/x
  3. Step 3: Cross multiply
    11,765.70x = 17,648.55 × 4,840.20
  4. Step 4: Simplify right side
    11,765.70x = 85,422,511.71
  5. Step 5: Solve for x
    x = 85,422,511.71/11,765.70
  6. Step 6: Final answer
    x = 7,260.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.