Home / 28,217.91-42,271.92-13,406.43

Finding the Fourth Proportional to 28,217.91, 42,271.92 and 13,406.43

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Solution

The fourth proportional to 28,217.91, 42,271.92 and 13,406.43 is: 20,083.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.91 : 42,271.92 = 13,406.43 : x
  2. Step 2: Convert to fraction form
    28,217.91/42,271.92 = 13,406.43/x
  3. Step 3: Cross multiply
    28,217.91x = 42,271.92 × 13,406.43
  4. Step 4: Simplify right side
    28,217.91x = 566,715,536.45
  5. Step 5: Solve for x
    x = 566,715,536.45/28,217.91
  6. Step 6: Final answer
    x = 20,083.54

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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.