Home / 21,585.76-29,792.78-13,622.64

Finding the Fourth Proportional to 21,585.76, 29,792.78 and 13,622.64

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Solution

The fourth proportional to 21,585.76, 29,792.78 and 13,622.64 is: 18,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.76 : 29,792.78 = 13,622.64 : x
  2. Step 2: Convert to fraction form
    21,585.76/29,792.78 = 13,622.64/x
  3. Step 3: Cross multiply
    21,585.76x = 29,792.78 × 13,622.64
  4. Step 4: Simplify right side
    21,585.76x = 405,856,316.54
  5. Step 5: Solve for x
    x = 405,856,316.54/21,585.76
  6. Step 6: Final answer
    x = 18,802.04

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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.