Home / 13,711.27-18,921.62-7,423.65

Finding the Fourth Proportional to 13,711.27, 18,921.62 and 7,423.65

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Solution

The fourth proportional to 13,711.27, 18,921.62 and 7,423.65 is: 10,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.27 : 18,921.62 = 7,423.65 : x
  2. Step 2: Convert to fraction form
    13,711.27/18,921.62 = 7,423.65/x
  3. Step 3: Cross multiply
    13,711.27x = 18,921.62 × 7,423.65
  4. Step 4: Simplify right side
    13,711.27x = 140,467,484.31
  5. Step 5: Solve for x
    x = 140,467,484.31/13,711.27
  6. Step 6: Final answer
    x = 10,244.67

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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.