Home / 13,792.81-20,694.21-8,521.67

Finding the Fourth Proportional to 13,792.81, 20,694.21 and 8,521.67

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Solution

The fourth proportional to 13,792.81, 20,694.21 and 8,521.67 is: 12,785.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.81 : 20,694.21 = 8,521.67 : x
  2. Step 2: Convert to fraction form
    13,792.81/20,694.21 = 8,521.67/x
  3. Step 3: Cross multiply
    13,792.81x = 20,694.21 × 8,521.67
  4. Step 4: Simplify right side
    13,792.81x = 176,349,228.53
  5. Step 5: Solve for x
    x = 176,349,228.53/13,792.81
  6. Step 6: Final answer
    x = 12,785.59

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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.