Home / 13,792.32-20,670-6,761.52

Finding the Fourth Proportional to 13,792.32, 20,670 and 6,761.52

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Solution

The fourth proportional to 13,792.32, 20,670 and 6,761.52 is: 10,133.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.32 : 20,670 = 6,761.52 : x
  2. Step 2: Convert to fraction form
    13,792.32/20,670 = 6,761.52/x
  3. Step 3: Cross multiply
    13,792.32x = 20,670 × 6,761.52
  4. Step 4: Simplify right side
    13,792.32x = 139,760,618.40
  5. Step 5: Solve for x
    x = 139,760,618.40/13,792.32
  6. Step 6: Final answer
    x = 10,133.22

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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.