Home / 21,352.64-29,463.90-11,921.60

Finding the Fourth Proportional to 21,352.64, 29,463.90 and 11,921.60

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Solution

The fourth proportional to 21,352.64, 29,463.90 and 11,921.60 is: 16,450.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.64 : 29,463.90 = 11,921.60 : x
  2. Step 2: Convert to fraction form
    21,352.64/29,463.90 = 11,921.60/x
  3. Step 3: Cross multiply
    21,352.64x = 29,463.90 × 11,921.60
  4. Step 4: Simplify right side
    21,352.64x = 351,256,830.24
  5. Step 5: Solve for x
    x = 351,256,830.24/21,352.64
  6. Step 6: Final answer
    x = 16,450.28

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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.