Home / 43,648.20-65,429.10-21,443.40

Finding the Fourth Proportional to 43,648.20, 65,429.10 and 21,443.40

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Solution

The fourth proportional to 43,648.20, 65,429.10 and 21,443.40 is: 32,143.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,648.20 : 65,429.10 = 21,443.40 : x
  2. Step 2: Convert to fraction form
    43,648.20/65,429.10 = 21,443.40/x
  3. Step 3: Cross multiply
    43,648.20x = 65,429.10 × 21,443.40
  4. Step 4: Simplify right side
    43,648.20x = 1,403,022,362.94
  5. Step 5: Solve for x
    x = 1,403,022,362.94/43,648.20
  6. Step 6: Final answer
    x = 32,143.88

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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.