Home / 21,336.76-29,444.64-11,905.34

Finding the Fourth Proportional to 21,336.76, 29,444.64 and 11,905.34

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Solution

The fourth proportional to 21,336.76, 29,444.64 and 11,905.34 is: 16,429.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.76 : 29,444.64 = 11,905.34 : x
  2. Step 2: Convert to fraction form
    21,336.76/29,444.64 = 11,905.34/x
  3. Step 3: Cross multiply
    21,336.76x = 29,444.64 × 11,905.34
  4. Step 4: Simplify right side
    21,336.76x = 350,548,450.38
  5. Step 5: Solve for x
    x = 350,548,450.38/21,336.76
  6. Step 6: Final answer
    x = 16,429.32

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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.