Home / 12,479.40-17,221.41-6,814.67

Finding the Fourth Proportional to 12,479.40, 17,221.41 and 6,814.67

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Solution

The fourth proportional to 12,479.40, 17,221.41 and 6,814.67 is: 9,404.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.40 : 17,221.41 = 6,814.67 : x
  2. Step 2: Convert to fraction form
    12,479.40/17,221.41 = 6,814.67/x
  3. Step 3: Cross multiply
    12,479.40x = 17,221.41 × 6,814.67
  4. Step 4: Simplify right side
    12,479.40x = 117,358,139.98
  5. Step 5: Solve for x
    x = 117,358,139.98/12,479.40
  6. Step 6: Final answer
    x = 9,404.15

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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.