Home / 21,438.14-29,584.86-11,878.32

Finding the Fourth Proportional to 21,438.14, 29,584.86 and 11,878.32

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Solution

The fourth proportional to 21,438.14, 29,584.86 and 11,878.32 is: 16,392.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.14 : 29,584.86 = 11,878.32 : x
  2. Step 2: Convert to fraction form
    21,438.14/29,584.86 = 11,878.32/x
  3. Step 3: Cross multiply
    21,438.14x = 29,584.86 × 11,878.32
  4. Step 4: Simplify right side
    21,438.14x = 351,418,226.92
  5. Step 5: Solve for x
    x = 351,418,226.92/21,438.14
  6. Step 6: Final answer
    x = 16,392.20

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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.