Home / 43,909.20-65,788.20-20,487.60

Finding the Fourth Proportional to 43,909.20, 65,788.20 and 20,487.60

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Solution

The fourth proportional to 43,909.20, 65,788.20 and 20,487.60 is: 30,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,909.20 : 65,788.20 = 20,487.60 : x
  2. Step 2: Convert to fraction form
    43,909.20/65,788.20 = 20,487.60/x
  3. Step 3: Cross multiply
    43,909.20x = 65,788.20 × 20,487.60
  4. Step 4: Simplify right side
    43,909.20x = 1,347,842,326.32
  5. Step 5: Solve for x
    x = 1,347,842,326.32/43,909.20
  6. Step 6: Final answer
    x = 30,696.13

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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.