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Finding the Fourth Proportional to 28,314.48, 39,062.48 and 16,984.48

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Solution

The fourth proportional to 28,314.48, 39,062.48 and 16,984.48 is: 23,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.48 : 39,062.48 = 16,984.48 : x
  2. Step 2: Convert to fraction form
    28,314.48/39,062.48 = 16,984.48/x
  3. Step 3: Cross multiply
    28,314.48x = 39,062.48 × 16,984.48
  4. Step 4: Simplify right side
    28,314.48x = 663,455,910.31
  5. Step 5: Solve for x
    x = 663,455,910.31/28,314.48
  6. Step 6: Final answer
    x = 23,431.68

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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.