Home / 28,611.81-42,912.36-11,967.24

Finding the Fourth Proportional to 28,611.81, 42,912.36 and 11,967.24

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Solution

The fourth proportional to 28,611.81, 42,912.36 and 11,967.24 is: 17,948.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.81 : 42,912.36 = 11,967.24 : x
  2. Step 2: Convert to fraction form
    28,611.81/42,912.36 = 11,967.24/x
  3. Step 3: Cross multiply
    28,611.81x = 42,912.36 × 11,967.24
  4. Step 4: Simplify right side
    28,611.81x = 513,542,511.09
  5. Step 5: Solve for x
    x = 513,542,511.09/28,611.81
  6. Step 6: Final answer
    x = 17,948.62

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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.