Home / 18,684.32-25,785.92-10,728.10

Finding the Fourth Proportional to 18,684.32, 25,785.92 and 10,728.10

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Solution

The fourth proportional to 18,684.32, 25,785.92 and 10,728.10 is: 14,805.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.32 : 25,785.92 = 10,728.10 : x
  2. Step 2: Convert to fraction form
    18,684.32/25,785.92 = 10,728.10/x
  3. Step 3: Cross multiply
    18,684.32x = 25,785.92 × 10,728.10
  4. Step 4: Simplify right side
    18,684.32x = 276,633,812.19
  5. Step 5: Solve for x
    x = 276,633,812.19/18,684.32
  6. Step 6: Final answer
    x = 14,805.67

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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.