Home / 28,925.60-43,388.40-21,149.60

Finding the Fourth Proportional to 28,925.60, 43,388.40 and 21,149.60

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Solution

The fourth proportional to 28,925.60, 43,388.40 and 21,149.60 is: 31,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,925.60 : 43,388.40 = 21,149.60 : x
  2. Step 2: Convert to fraction form
    28,925.60/43,388.40 = 21,149.60/x
  3. Step 3: Cross multiply
    28,925.60x = 43,388.40 × 21,149.60
  4. Step 4: Simplify right side
    28,925.60x = 917,647,304.64
  5. Step 5: Solve for x
    x = 917,647,304.64/28,925.60
  6. Step 6: Final answer
    x = 31,724.40

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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.