Home / 18,790.20-28,038.26-18,680.85

Finding the Fourth Proportional to 18,790.20, 28,038.26 and 18,680.85

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Solution

The fourth proportional to 18,790.20, 28,038.26 and 18,680.85 is: 27,875.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.20 : 28,038.26 = 18,680.85 : x
  2. Step 2: Convert to fraction form
    18,790.20/28,038.26 = 18,680.85/x
  3. Step 3: Cross multiply
    18,790.20x = 28,038.26 × 18,680.85
  4. Step 4: Simplify right side
    18,790.20x = 523,778,576.02
  5. Step 5: Solve for x
    x = 523,778,576.02/18,790.20
  6. Step 6: Final answer
    x = 27,875.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.