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Finding the Fourth Proportional to 19,307.39, 28,961.07 and 6,820.62

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Solution

The fourth proportional to 19,307.39, 28,961.07 and 6,820.62 is: 10,230.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,307.39 : 28,961.07 = 6,820.62 : x
  2. Step 2: Convert to fraction form
    19,307.39/28,961.07 = 6,820.62/x
  3. Step 3: Cross multiply
    19,307.39x = 28,961.07 × 6,820.62
  4. Step 4: Simplify right side
    19,307.39x = 197,532,453.26
  5. Step 5: Solve for x
    x = 197,532,453.26/19,307.39
  6. Step 6: Final answer
    x = 10,230.93

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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.