Home / 28,423.89-42,638.90-23,205.83

Finding the Fourth Proportional to 28,423.89, 42,638.90 and 23,205.83

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Solution

The fourth proportional to 28,423.89, 42,638.90 and 23,205.83 is: 34,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.89 : 42,638.90 = 23,205.83 : x
  2. Step 2: Convert to fraction form
    28,423.89/42,638.90 = 23,205.83/x
  3. Step 3: Cross multiply
    28,423.89x = 42,638.90 × 23,205.83
  4. Step 4: Simplify right side
    28,423.89x = 989,470,735.56
  5. Step 5: Solve for x
    x = 989,470,735.56/28,423.89
  6. Step 6: Final answer
    x = 34,811.24

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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.