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Finding the Fourth Proportional to 14,074.42, 21,075.92 and 8,448.59

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Solution

The fourth proportional to 14,074.42, 21,075.92 and 8,448.59 is: 12,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,074.42 : 21,075.92 = 8,448.59 : x
  2. Step 2: Convert to fraction form
    14,074.42/21,075.92 = 8,448.59/x
  3. Step 3: Cross multiply
    14,074.42x = 21,075.92 × 8,448.59
  4. Step 4: Simplify right side
    14,074.42x = 178,061,843.21
  5. Step 5: Solve for x
    x = 178,061,843.21/14,074.42
  6. Step 6: Final answer
    x = 12,651.45

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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.