Home / 21,505.23-29,676.78-12,073.79

Finding the Fourth Proportional to 21,505.23, 29,676.78 and 12,073.79

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Solution

The fourth proportional to 21,505.23, 29,676.78 and 12,073.79 is: 16,661.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.23 : 29,676.78 = 12,073.79 : x
  2. Step 2: Convert to fraction form
    21,505.23/29,676.78 = 12,073.79/x
  3. Step 3: Cross multiply
    21,505.23x = 29,676.78 × 12,073.79
  4. Step 4: Simplify right side
    21,505.23x = 358,311,283.79
  5. Step 5: Solve for x
    x = 358,311,283.79/21,505.23
  6. Step 6: Final answer
    x = 16,661.59

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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.