Home / 12,328.24-18,578.08-11,158.60

Finding the Fourth Proportional to 12,328.24, 18,578.08 and 11,158.60

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Solution

The fourth proportional to 12,328.24, 18,578.08 and 11,158.60 is: 16,815.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.24 : 18,578.08 = 11,158.60 : x
  2. Step 2: Convert to fraction form
    12,328.24/18,578.08 = 11,158.60/x
  3. Step 3: Cross multiply
    12,328.24x = 18,578.08 × 11,158.60
  4. Step 4: Simplify right side
    12,328.24x = 207,305,363.49
  5. Step 5: Solve for x
    x = 207,305,363.49/12,328.24
  6. Step 6: Final answer
    x = 16,815.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.