Home / 28,911.26-39,889.44-18,157.30

Finding the Fourth Proportional to 28,911.26, 39,889.44 and 18,157.30

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Solution

The fourth proportional to 28,911.26, 39,889.44 and 18,157.30 is: 25,051.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.26 : 39,889.44 = 18,157.30 : x
  2. Step 2: Convert to fraction form
    28,911.26/39,889.44 = 18,157.30/x
  3. Step 3: Cross multiply
    28,911.26x = 39,889.44 × 18,157.30
  4. Step 4: Simplify right side
    28,911.26x = 724,284,528.91
  5. Step 5: Solve for x
    x = 724,284,528.91/28,911.26
  6. Step 6: Final answer
    x = 25,051.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.