Home / 12,356.49-18,519.21-8,828.13

Finding the Fourth Proportional to 12,356.49, 18,519.21 and 8,828.13

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Solution

The fourth proportional to 12,356.49, 18,519.21 and 8,828.13 is: 13,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.49 : 18,519.21 = 8,828.13 : x
  2. Step 2: Convert to fraction form
    12,356.49/18,519.21 = 8,828.13/x
  3. Step 3: Cross multiply
    12,356.49x = 18,519.21 × 8,828.13
  4. Step 4: Simplify right side
    12,356.49x = 163,489,993.38
  5. Step 5: Solve for x
    x = 163,489,993.38/12,356.49
  6. Step 6: Final answer
    x = 13,231.10

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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.