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Finding the Fourth Proportional to 43,354.60, 65,036.21 and 11,765.16

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Solution

The fourth proportional to 43,354.60, 65,036.21 and 11,765.16 is: 17,648.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,354.60 : 65,036.21 = 11,765.16 : x
  2. Step 2: Convert to fraction form
    43,354.60/65,036.21 = 11,765.16/x
  3. Step 3: Cross multiply
    43,354.60x = 65,036.21 × 11,765.16
  4. Step 4: Simplify right side
    43,354.60x = 765,161,416.44
  5. Step 5: Solve for x
    x = 765,161,416.44/43,354.60
  6. Step 6: Final answer
    x = 17,648.91

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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.