Home / 12,651.21-18,980.46-5,254.29

Finding the Fourth Proportional to 12,651.21, 18,980.46 and 5,254.29

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Solution

The fourth proportional to 12,651.21, 18,980.46 and 5,254.29 is: 7,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.21 : 18,980.46 = 5,254.29 : x
  2. Step 2: Convert to fraction form
    12,651.21/18,980.46 = 5,254.29/x
  3. Step 3: Cross multiply
    12,651.21x = 18,980.46 × 5,254.29
  4. Step 4: Simplify right side
    12,651.21x = 99,728,841.17
  5. Step 5: Solve for x
    x = 99,728,841.17/12,651.21
  6. Step 6: Final answer
    x = 7,882.95

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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.