Home / 18,506.12-25,500.66-13,189.64

Finding the Fourth Proportional to 18,506.12, 25,500.66 and 13,189.64

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Solution

The fourth proportional to 18,506.12, 25,500.66 and 13,189.64 is: 18,174.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.12 : 25,500.66 = 13,189.64 : x
  2. Step 2: Convert to fraction form
    18,506.12/25,500.66 = 13,189.64/x
  3. Step 3: Cross multiply
    18,506.12x = 25,500.66 × 13,189.64
  4. Step 4: Simplify right side
    18,506.12x = 336,344,525.16
  5. Step 5: Solve for x
    x = 336,344,525.16/18,506.12
  6. Step 6: Final answer
    x = 18,174.77

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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.