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Finding the Fourth Proportional to 28,013.25, 38,658.29 and 16,835.25

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Solution

The fourth proportional to 28,013.25, 38,658.29 and 16,835.25 is: 23,232.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.25 : 38,658.29 = 16,835.25 : x
  2. Step 2: Convert to fraction form
    28,013.25/38,658.29 = 16,835.25/x
  3. Step 3: Cross multiply
    28,013.25x = 38,658.29 × 16,835.25
  4. Step 4: Simplify right side
    28,013.25x = 650,821,892.55
  5. Step 5: Solve for x
    x = 650,821,892.55/28,013.25
  6. Step 6: Final answer
    x = 23,232.65

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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.