Home / 18,958.07-28,378.78-12,370.07

Finding the Fourth Proportional to 18,958.07, 28,378.78 and 12,370.07

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Solution

The fourth proportional to 18,958.07, 28,378.78 and 12,370.07 is: 18,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.07 : 28,378.78 = 12,370.07 : x
  2. Step 2: Convert to fraction form
    18,958.07/28,378.78 = 12,370.07/x
  3. Step 3: Cross multiply
    18,958.07x = 28,378.78 × 12,370.07
  4. Step 4: Simplify right side
    18,958.07x = 351,047,322.30
  5. Step 5: Solve for x
    x = 351,047,322.30/18,958.07
  6. Step 6: Final answer
    x = 18,517.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.