Home / 13,226.99-18,251.91-7,921.67

Finding the Fourth Proportional to 13,226.99, 18,251.91 and 7,921.67

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Solution

The fourth proportional to 13,226.99, 18,251.91 and 7,921.67 is: 10,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,226.99 : 18,251.91 = 7,921.67 : x
  2. Step 2: Convert to fraction form
    13,226.99/18,251.91 = 7,921.67/x
  3. Step 3: Cross multiply
    13,226.99x = 18,251.91 × 7,921.67
  4. Step 4: Simplify right side
    13,226.99x = 144,585,516.63
  5. Step 5: Solve for x
    x = 144,585,516.63/13,226.99
  6. Step 6: Final answer
    x = 10,931.10

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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.