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Finding the Fourth Proportional to 26,281.75, 39,428.39 and 9,865.75

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Solution

The fourth proportional to 26,281.75, 39,428.39 and 9,865.75 is: 14,800.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,281.75 : 39,428.39 = 9,865.75 : x
  2. Step 2: Convert to fraction form
    26,281.75/39,428.39 = 9,865.75/x
  3. Step 3: Cross multiply
    26,281.75x = 39,428.39 × 9,865.75
  4. Step 4: Simplify right side
    26,281.75x = 388,990,638.64
  5. Step 5: Solve for x
    x = 388,990,638.64/26,281.75
  6. Step 6: Final answer
    x = 14,800.79

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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.