Home / 21,388.58-29,516.34-11,956.94

Finding the Fourth Proportional to 21,388.58, 29,516.34 and 11,956.94

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Solution

The fourth proportional to 21,388.58, 29,516.34 and 11,956.94 is: 16,500.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.58 : 29,516.34 = 11,956.94 : x
  2. Step 2: Convert to fraction form
    21,388.58/29,516.34 = 11,956.94/x
  3. Step 3: Cross multiply
    21,388.58x = 29,516.34 × 11,956.94
  4. Step 4: Simplify right side
    21,388.58x = 352,925,106.40
  5. Step 5: Solve for x
    x = 352,925,106.40/21,388.58
  6. Step 6: Final answer
    x = 16,500.63

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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.