Home / 28,912.80-43,358.40-10,185.60

Finding the Fourth Proportional to 28,912.80, 43,358.40 and 10,185.60

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Solution

The fourth proportional to 28,912.80, 43,358.40 and 10,185.60 is: 15,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.80 : 43,358.40 = 10,185.60 : x
  2. Step 2: Convert to fraction form
    28,912.80/43,358.40 = 10,185.60/x
  3. Step 3: Cross multiply
    28,912.80x = 43,358.40 × 10,185.60
  4. Step 4: Simplify right side
    28,912.80x = 441,631,319.04
  5. Step 5: Solve for x
    x = 441,631,319.04/28,912.80
  6. Step 6: Final answer
    x = 15,274.60

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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.