Home / 20,792.76-31,188.60-5,210.52

Finding the Fourth Proportional to 20,792.76, 31,188.60 and 5,210.52

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Solution

The fourth proportional to 20,792.76, 31,188.60 and 5,210.52 is: 7,815.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.76 : 31,188.60 = 5,210.52 : x
  2. Step 2: Convert to fraction form
    20,792.76/31,188.60 = 5,210.52/x
  3. Step 3: Cross multiply
    20,792.76x = 31,188.60 × 5,210.52
  4. Step 4: Simplify right side
    20,792.76x = 162,508,824.07
  5. Step 5: Solve for x
    x = 162,508,824.07/20,792.76
  6. Step 6: Final answer
    x = 7,815.64

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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.