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Finding the Fourth Proportional to 28,522.41, 42,788.07 and 8,805.39

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Solution

The fourth proportional to 28,522.41, 42,788.07 and 8,805.39 is: 13,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.41 : 42,788.07 = 8,805.39 : x
  2. Step 2: Convert to fraction form
    28,522.41/42,788.07 = 8,805.39/x
  3. Step 3: Cross multiply
    28,522.41x = 42,788.07 × 8,805.39
  4. Step 4: Simplify right side
    28,522.41x = 376,765,643.70
  5. Step 5: Solve for x
    x = 376,765,643.70/28,522.41
  6. Step 6: Final answer
    x = 13,209.46

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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.