Home / 28,506.38-42,760.98-20,195.78

Finding the Fourth Proportional to 28,506.38, 42,760.98 and 20,195.78

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Solution

The fourth proportional to 28,506.38, 42,760.98 and 20,195.78 is: 30,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.38 : 42,760.98 = 20,195.78 : x
  2. Step 2: Convert to fraction form
    28,506.38/42,760.98 = 20,195.78/x
  3. Step 3: Cross multiply
    28,506.38x = 42,760.98 × 20,195.78
  4. Step 4: Simplify right side
    28,506.38x = 863,591,130.86
  5. Step 5: Solve for x
    x = 863,591,130.86/28,506.38
  6. Step 6: Final answer
    x = 30,294.67

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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.