Home / 13,396.68-18,488.28-7,731.67

Finding the Fourth Proportional to 13,396.68, 18,488.28 and 7,731.67

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Solution

The fourth proportional to 13,396.68, 18,488.28 and 7,731.67 is: 10,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.68 : 18,488.28 = 7,731.67 : x
  2. Step 2: Convert to fraction form
    13,396.68/18,488.28 = 7,731.67/x
  3. Step 3: Cross multiply
    13,396.68x = 18,488.28 × 7,731.67
  4. Step 4: Simplify right side
    13,396.68x = 142,945,297.27
  5. Step 5: Solve for x
    x = 142,945,297.27/13,396.68
  6. Step 6: Final answer
    x = 10,670.20

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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.