Home / 18,716.16-28,091.24-9,958.40

Finding the Fourth Proportional to 18,716.16, 28,091.24 and 9,958.40

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Solution

The fourth proportional to 18,716.16, 28,091.24 and 9,958.40 is: 14,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.16 : 28,091.24 = 9,958.40 : x
  2. Step 2: Convert to fraction form
    18,716.16/28,091.24 = 9,958.40/x
  3. Step 3: Cross multiply
    18,716.16x = 28,091.24 × 9,958.40
  4. Step 4: Simplify right side
    18,716.16x = 279,743,804.42
  5. Step 5: Solve for x
    x = 279,743,804.42/18,716.16
  6. Step 6: Final answer
    x = 14,946.65

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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.