Home / 21,361.16-29,474.82-11,929.76

Finding the Fourth Proportional to 21,361.16, 29,474.82 and 11,929.76

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Solution

The fourth proportional to 21,361.16, 29,474.82 and 11,929.76 is: 16,461.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.16 : 29,474.82 = 11,929.76 : x
  2. Step 2: Convert to fraction form
    21,361.16/29,474.82 = 11,929.76/x
  3. Step 3: Cross multiply
    21,361.16x = 29,474.82 × 11,929.76
  4. Step 4: Simplify right side
    21,361.16x = 351,627,528.64
  5. Step 5: Solve for x
    x = 351,627,528.64/21,361.16
  6. Step 6: Final answer
    x = 16,461.07

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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.