Home / 18,216.12-25,154.70-11,513.64

Finding the Fourth Proportional to 18,216.12, 25,154.70 and 11,513.64

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Solution

The fourth proportional to 18,216.12, 25,154.70 and 11,513.64 is: 15,899.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.12 : 25,154.70 = 11,513.64 : x
  2. Step 2: Convert to fraction form
    18,216.12/25,154.70 = 11,513.64/x
  3. Step 3: Cross multiply
    18,216.12x = 25,154.70 × 11,513.64
  4. Step 4: Simplify right side
    18,216.12x = 289,622,160.11
  5. Step 5: Solve for x
    x = 289,622,160.11/18,216.12
  6. Step 6: Final answer
    x = 15,899.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.