Home / 28,558.04-42,790.25-20,223.09

Finding the Fourth Proportional to 28,558.04, 42,790.25 and 20,223.09

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Solution

The fourth proportional to 28,558.04, 42,790.25 and 20,223.09 is: 30,301.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.04 : 42,790.25 = 20,223.09 : x
  2. Step 2: Convert to fraction form
    28,558.04/42,790.25 = 20,223.09/x
  3. Step 3: Cross multiply
    28,558.04x = 42,790.25 × 20,223.09
  4. Step 4: Simplify right side
    28,558.04x = 865,350,975.76
  5. Step 5: Solve for x
    x = 865,350,975.76/28,558.04
  6. Step 6: Final answer
    x = 30,301.48

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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.