Home / 13,715.91-20,527.79-7,863.75

Finding the Fourth Proportional to 13,715.91, 20,527.79 and 7,863.75

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Solution

The fourth proportional to 13,715.91, 20,527.79 and 7,863.75 is: 11,769.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.91 : 20,527.79 = 7,863.75 : x
  2. Step 2: Convert to fraction form
    13,715.91/20,527.79 = 7,863.75/x
  3. Step 3: Cross multiply
    13,715.91x = 20,527.79 × 7,863.75
  4. Step 4: Simplify right side
    13,715.91x = 161,425,369.29
  5. Step 5: Solve for x
    x = 161,425,369.29/13,715.91
  6. Step 6: Final answer
    x = 11,769.21

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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.