Home / 12,491.29-18,737.57-4,170.97

Finding the Fourth Proportional to 12,491.29, 18,737.57 and 4,170.97

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Solution

The fourth proportional to 12,491.29, 18,737.57 and 4,170.97 is: 6,256.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.29 : 18,737.57 = 4,170.97 : x
  2. Step 2: Convert to fraction form
    12,491.29/18,737.57 = 4,170.97/x
  3. Step 3: Cross multiply
    12,491.29x = 18,737.57 × 4,170.97
  4. Step 4: Simplify right side
    12,491.29x = 78,153,842.34
  5. Step 5: Solve for x
    x = 78,153,842.34/12,491.29
  6. Step 6: Final answer
    x = 6,256.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.