Home / 28,933.20-43,399.80-9,211.60

Finding the Fourth Proportional to 28,933.20, 43,399.80 and 9,211.60

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Solution

The fourth proportional to 28,933.20, 43,399.80 and 9,211.60 is: 13,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,933.20 : 43,399.80 = 9,211.60 : x
  2. Step 2: Convert to fraction form
    28,933.20/43,399.80 = 9,211.60/x
  3. Step 3: Cross multiply
    28,933.20x = 43,399.80 × 9,211.60
  4. Step 4: Simplify right side
    28,933.20x = 399,781,597.68
  5. Step 5: Solve for x
    x = 399,781,597.68/28,933.20
  6. Step 6: Final answer
    x = 13,817.40

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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.