Home / 21,276.76-29,361.54-11,845.16

Finding the Fourth Proportional to 21,276.76, 29,361.54 and 11,845.16

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Solution

The fourth proportional to 21,276.76, 29,361.54 and 11,845.16 is: 16,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.76 : 29,361.54 = 11,845.16 : x
  2. Step 2: Convert to fraction form
    21,276.76/29,361.54 = 11,845.16/x
  3. Step 3: Cross multiply
    21,276.76x = 29,361.54 × 11,845.16
  4. Step 4: Simplify right side
    21,276.76x = 347,792,139.15
  5. Step 5: Solve for x
    x = 347,792,139.15/21,276.76
  6. Step 6: Final answer
    x = 16,346.10

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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.