Home / 28,890.80-43,336.20-25,319.60

Finding the Fourth Proportional to 28,890.80, 43,336.20 and 25,319.60

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Solution

The fourth proportional to 28,890.80, 43,336.20 and 25,319.60 is: 37,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.80 : 43,336.20 = 25,319.60 : x
  2. Step 2: Convert to fraction form
    28,890.80/43,336.20 = 25,319.60/x
  3. Step 3: Cross multiply
    28,890.80x = 43,336.20 × 25,319.60
  4. Step 4: Simplify right side
    28,890.80x = 1,097,255,249.52
  5. Step 5: Solve for x
    x = 1,097,255,249.52/28,890.80
  6. Step 6: Final answer
    x = 37,979.40

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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.