Home / 13,958.68-20,824.80-12,815.62

Finding the Fourth Proportional to 13,958.68, 20,824.80 and 12,815.62

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Solution

The fourth proportional to 13,958.68, 20,824.80 and 12,815.62 is: 19,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.68 : 20,824.80 = 12,815.62 : x
  2. Step 2: Convert to fraction form
    13,958.68/20,824.80 = 12,815.62/x
  3. Step 3: Cross multiply
    13,958.68x = 20,824.80 × 12,815.62
  4. Step 4: Simplify right side
    13,958.68x = 266,882,623.26
  5. Step 5: Solve for x
    x = 266,882,623.26/13,958.68
  6. Step 6: Final answer
    x = 19,119.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.