Home / 43,729.20-65,518.20-20,307.60

Finding the Fourth Proportional to 43,729.20, 65,518.20 and 20,307.60

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Solution

The fourth proportional to 43,729.20, 65,518.20 and 20,307.60 is: 30,426.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,729.20 : 65,518.20 = 20,307.60 : x
  2. Step 2: Convert to fraction form
    43,729.20/65,518.20 = 20,307.60/x
  3. Step 3: Cross multiply
    43,729.20x = 65,518.20 × 20,307.60
  4. Step 4: Simplify right side
    43,729.20x = 1,330,517,398.32
  5. Step 5: Solve for x
    x = 1,330,517,398.32/43,729.20
  6. Step 6: Final answer
    x = 30,426.29

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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.