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Finding the Fourth Proportional to 28,896.48, 39,873.60 and 16,963.20

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Solution

The fourth proportional to 28,896.48, 39,873.60 and 16,963.20 is: 23,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,896.48 : 39,873.60 = 16,963.20 : x
  2. Step 2: Convert to fraction form
    28,896.48/39,873.60 = 16,963.20/x
  3. Step 3: Cross multiply
    28,896.48x = 39,873.60 × 16,963.20
  4. Step 4: Simplify right side
    28,896.48x = 676,383,851.52
  5. Step 5: Solve for x
    x = 676,383,851.52/28,896.48
  6. Step 6: Final answer
    x = 23,407.14

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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.