Home / 28,975.20-43,491.60-14,200.80

Finding the Fourth Proportional to 28,975.20, 43,491.60 and 14,200.80

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Solution

The fourth proportional to 28,975.20, 43,491.60 and 14,200.80 is: 21,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.20 : 43,491.60 = 14,200.80 : x
  2. Step 2: Convert to fraction form
    28,975.20/43,491.60 = 14,200.80/x
  3. Step 3: Cross multiply
    28,975.20x = 43,491.60 × 14,200.80
  4. Step 4: Simplify right side
    28,975.20x = 617,615,513.28
  5. Step 5: Solve for x
    x = 617,615,513.28/28,975.20
  6. Step 6: Final answer
    x = 21,315.31

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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.