Home / 28,242.90-42,369.21-11,611.98

Finding the Fourth Proportional to 28,242.90, 42,369.21 and 11,611.98

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Solution

The fourth proportional to 28,242.90, 42,369.21 and 11,611.98 is: 17,419.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.90 : 42,369.21 = 11,611.98 : x
  2. Step 2: Convert to fraction form
    28,242.90/42,369.21 = 11,611.98/x
  3. Step 3: Cross multiply
    28,242.90x = 42,369.21 × 11,611.98
  4. Step 4: Simplify right side
    28,242.90x = 491,990,419.14
  5. Step 5: Solve for x
    x = 491,990,419.14/28,242.90
  6. Step 6: Final answer
    x = 17,419.97

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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.