Home / 12,117.30-16,722.69-6,812.47

Finding the Fourth Proportional to 12,117.30, 16,722.69 and 6,812.47

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Solution

The fourth proportional to 12,117.30, 16,722.69 and 6,812.47 is: 9,401.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.30 : 16,722.69 = 6,812.47 : x
  2. Step 2: Convert to fraction form
    12,117.30/16,722.69 = 6,812.47/x
  3. Step 3: Cross multiply
    12,117.30x = 16,722.69 × 6,812.47
  4. Step 4: Simplify right side
    12,117.30x = 113,922,819.30
  5. Step 5: Solve for x
    x = 113,922,819.30/12,117.30
  6. Step 6: Final answer
    x = 9,401.67

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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.