Home / 28,821.68-43,222.80-19,013.12

Finding the Fourth Proportional to 28,821.68, 43,222.80 and 19,013.12

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Solution

The fourth proportional to 28,821.68, 43,222.80 and 19,013.12 is: 28,513.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.68 : 43,222.80 = 19,013.12 : x
  2. Step 2: Convert to fraction form
    28,821.68/43,222.80 = 19,013.12/x
  3. Step 3: Cross multiply
    28,821.68x = 43,222.80 × 19,013.12
  4. Step 4: Simplify right side
    28,821.68x = 821,800,283.14
  5. Step 5: Solve for x
    x = 821,800,283.14/28,821.68
  6. Step 6: Final answer
    x = 28,513.27

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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.