Home / 43,693.20-65,505.78-20,316.60

Finding the Fourth Proportional to 43,693.20, 65,505.78 and 20,316.60

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Solution

The fourth proportional to 43,693.20, 65,505.78 and 20,316.60 is: 30,459.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,693.20 : 65,505.78 = 20,316.60 : x
  2. Step 2: Convert to fraction form
    43,693.20/65,505.78 = 20,316.60/x
  3. Step 3: Cross multiply
    43,693.20x = 65,505.78 × 20,316.60
  4. Step 4: Simplify right side
    43,693.20x = 1,330,854,729.95
  5. Step 5: Solve for x
    x = 1,330,854,729.95/43,693.20
  6. Step 6: Final answer
    x = 30,459.08

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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.