Home / 20,792.43-31,188.65-5,210.06

Finding the Fourth Proportional to 20,792.43, 31,188.65 and 5,210.06

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Solution

The fourth proportional to 20,792.43, 31,188.65 and 5,210.06 is: 7,815.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.43 : 31,188.65 = 5,210.06 : x
  2. Step 2: Convert to fraction form
    20,792.43/31,188.65 = 5,210.06/x
  3. Step 3: Cross multiply
    20,792.43x = 31,188.65 × 5,210.06
  4. Step 4: Simplify right side
    20,792.43x = 162,494,737.82
  5. Step 5: Solve for x
    x = 162,494,737.82/20,792.43
  6. Step 6: Final answer
    x = 7,815.09

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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.