Home / 14,131.20-21,206.80-5,818.72

Finding the Fourth Proportional to 14,131.20, 21,206.80 and 5,818.72

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Solution

The fourth proportional to 14,131.20, 21,206.80 and 5,818.72 is: 8,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,131.20 : 21,206.80 = 5,818.72 : x
  2. Step 2: Convert to fraction form
    14,131.20/21,206.80 = 5,818.72/x
  3. Step 3: Cross multiply
    14,131.20x = 21,206.80 × 5,818.72
  4. Step 4: Simplify right side
    14,131.20x = 123,396,431.30
  5. Step 5: Solve for x
    x = 123,396,431.30/14,131.20
  6. Step 6: Final answer
    x = 8,732.20

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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.