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Finding the Fourth Proportional to 14,645.85, 21,970.91 and 4,647.25

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Solution

The fourth proportional to 14,645.85, 21,970.91 and 4,647.25 is: 6,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.85 : 21,970.91 = 4,647.25 : x
  2. Step 2: Convert to fraction form
    14,645.85/21,970.91 = 4,647.25/x
  3. Step 3: Cross multiply
    14,645.85x = 21,970.91 × 4,647.25
  4. Step 4: Simplify right side
    14,645.85x = 102,104,311.50
  5. Step 5: Solve for x
    x = 102,104,311.50/14,645.85
  6. Step 6: Final answer
    x = 6,971.55

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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.