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Finding the Fourth Proportional to 13,977.98, 20,969.04 and 4,618.99

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Solution

The fourth proportional to 13,977.98, 20,969.04 and 4,618.99 is: 6,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.98 : 20,969.04 = 4,618.99 : x
  2. Step 2: Convert to fraction form
    13,977.98/20,969.04 = 4,618.99/x
  3. Step 3: Cross multiply
    13,977.98x = 20,969.04 × 4,618.99
  4. Step 4: Simplify right side
    13,977.98x = 96,855,745.19
  5. Step 5: Solve for x
    x = 96,855,745.19/13,977.98
  6. Step 6: Final answer
    x = 6,929.16

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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.