Home / 20,333.31-28,077.48-12,792.21

Finding the Fourth Proportional to 20,333.31, 28,077.48 and 12,792.21

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Solution

The fourth proportional to 20,333.31, 28,077.48 and 12,792.21 is: 17,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.31 : 28,077.48 = 12,792.21 : x
  2. Step 2: Convert to fraction form
    20,333.31/28,077.48 = 12,792.21/x
  3. Step 3: Cross multiply
    20,333.31x = 28,077.48 × 12,792.21
  4. Step 4: Simplify right side
    20,333.31x = 359,173,020.43
  5. Step 5: Solve for x
    x = 359,173,020.43/20,333.31
  6. Step 6: Final answer
    x = 17,664.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.