Home / 28,450.07-42,640.53-20,132.52

Finding the Fourth Proportional to 28,450.07, 42,640.53 and 20,132.52

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Solution

The fourth proportional to 28,450.07, 42,640.53 and 20,132.52 is: 30,174.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,450.07 : 42,640.53 = 20,132.52 : x
  2. Step 2: Convert to fraction form
    28,450.07/42,640.53 = 20,132.52/x
  3. Step 3: Cross multiply
    28,450.07x = 42,640.53 × 20,132.52
  4. Step 4: Simplify right side
    28,450.07x = 858,461,323.04
  5. Step 5: Solve for x
    x = 858,461,323.04/28,450.07
  6. Step 6: Final answer
    x = 30,174.32

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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.