Home / 21,361.16-29,479.24-12,286.50

Finding the Fourth Proportional to 21,361.16, 29,479.24 and 12,286.50

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Solution

The fourth proportional to 21,361.16, 29,479.24 and 12,286.50 is: 16,955.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.16 : 29,479.24 = 12,286.50 : x
  2. Step 2: Convert to fraction form
    21,361.16/29,479.24 = 12,286.50/x
  3. Step 3: Cross multiply
    21,361.16x = 29,479.24 × 12,286.50
  4. Step 4: Simplify right side
    21,361.16x = 362,196,725.24
  5. Step 5: Solve for x
    x = 362,196,725.24/21,361.16
  6. Step 6: Final answer
    x = 16,955.86

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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.