Home / 28,474.51-42,687.46-20,128.27

Finding the Fourth Proportional to 28,474.51, 42,687.46 and 20,128.27

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Solution

The fourth proportional to 28,474.51, 42,687.46 and 20,128.27 is: 30,175.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.51 : 42,687.46 = 20,128.27 : x
  2. Step 2: Convert to fraction form
    28,474.51/42,687.46 = 20,128.27/x
  3. Step 3: Cross multiply
    28,474.51x = 42,687.46 × 20,128.27
  4. Step 4: Simplify right side
    28,474.51x = 859,224,720.49
  5. Step 5: Solve for x
    x = 859,224,720.49/28,474.51
  6. Step 6: Final answer
    x = 30,175.22

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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.