Home / 28,136.98-42,196.96-9,412.21

Finding the Fourth Proportional to 28,136.98, 42,196.96 and 9,412.21

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Solution

The fourth proportional to 28,136.98, 42,196.96 and 9,412.21 is: 14,115.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.98 : 42,196.96 = 9,412.21 : x
  2. Step 2: Convert to fraction form
    28,136.98/42,196.96 = 9,412.21/x
  3. Step 3: Cross multiply
    28,136.98x = 42,196.96 × 9,412.21
  4. Step 4: Simplify right side
    28,136.98x = 397,166,648.88
  5. Step 5: Solve for x
    x = 397,166,648.88/28,136.98
  6. Step 6: Final answer
    x = 14,115.47

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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.