Home / 20,494.60-28,276.42-12,528.44

Finding the Fourth Proportional to 20,494.60, 28,276.42 and 12,528.44

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Solution

The fourth proportional to 20,494.60, 28,276.42 and 12,528.44 is: 17,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.60 : 28,276.42 = 12,528.44 : x
  2. Step 2: Convert to fraction form
    20,494.60/28,276.42 = 12,528.44/x
  3. Step 3: Cross multiply
    20,494.60x = 28,276.42 × 12,528.44
  4. Step 4: Simplify right side
    20,494.60x = 354,259,431.38
  5. Step 5: Solve for x
    x = 354,259,431.38/20,494.60
  6. Step 6: Final answer
    x = 17,285.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.