Home / 28,840.60-43,260.90-9,125.20

Finding the Fourth Proportional to 28,840.60, 43,260.90 and 9,125.20

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Solution

The fourth proportional to 28,840.60, 43,260.90 and 9,125.20 is: 13,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,840.60 : 43,260.90 = 9,125.20 : x
  2. Step 2: Convert to fraction form
    28,840.60/43,260.90 = 9,125.20/x
  3. Step 3: Cross multiply
    28,840.60x = 43,260.90 × 9,125.20
  4. Step 4: Simplify right side
    28,840.60x = 394,764,364.68
  5. Step 5: Solve for x
    x = 394,764,364.68/28,840.60
  6. Step 6: Final answer
    x = 13,687.80

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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.