Home / 28,812.78-43,268.58-17,784.63

Finding the Fourth Proportional to 28,812.78, 43,268.58 and 17,784.63

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Solution

The fourth proportional to 28,812.78, 43,268.58 and 17,784.63 is: 26,707.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.78 : 43,268.58 = 17,784.63 : x
  2. Step 2: Convert to fraction form
    28,812.78/43,268.58 = 17,784.63/x
  3. Step 3: Cross multiply
    28,812.78x = 43,268.58 × 17,784.63
  4. Step 4: Simplify right side
    28,812.78x = 769,515,685.93
  5. Step 5: Solve for x
    x = 769,515,685.93/28,812.78
  6. Step 6: Final answer
    x = 26,707.44

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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.