Home / 43,780.68-65,686.53-21,609.60

Finding the Fourth Proportional to 43,780.68, 65,686.53 and 21,609.60

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Solution

The fourth proportional to 43,780.68, 65,686.53 and 21,609.60 is: 32,422.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,780.68 : 65,686.53 = 21,609.60 : x
  2. Step 2: Convert to fraction form
    43,780.68/65,686.53 = 21,609.60/x
  3. Step 3: Cross multiply
    43,780.68x = 65,686.53 × 21,609.60
  4. Step 4: Simplify right side
    43,780.68x = 1,419,459,638.69
  5. Step 5: Solve for x
    x = 1,419,459,638.69/43,780.68
  6. Step 6: Final answer
    x = 32,422.06

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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.