Home / 18,126.42-25,025.66-12,085.16

Finding the Fourth Proportional to 18,126.42, 25,025.66 and 12,085.16

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Solution

The fourth proportional to 18,126.42, 25,025.66 and 12,085.16 is: 16,684.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.42 : 25,025.66 = 12,085.16 : x
  2. Step 2: Convert to fraction form
    18,126.42/25,025.66 = 12,085.16/x
  3. Step 3: Cross multiply
    18,126.42x = 25,025.66 × 12,085.16
  4. Step 4: Simplify right side
    18,126.42x = 302,439,105.21
  5. Step 5: Solve for x
    x = 302,439,105.21/18,126.42
  6. Step 6: Final answer
    x = 16,684.99

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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.