Home / 21,290.46-29,381.46-11,730.96

Finding the Fourth Proportional to 21,290.46, 29,381.46 and 11,730.96

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Solution

The fourth proportional to 21,290.46, 29,381.46 and 11,730.96 is: 16,189.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.46 : 29,381.46 = 11,730.96 : x
  2. Step 2: Convert to fraction form
    21,290.46/29,381.46 = 11,730.96/x
  3. Step 3: Cross multiply
    21,290.46x = 29,381.46 × 11,730.96
  4. Step 4: Simplify right side
    21,290.46x = 344,672,732.00
  5. Step 5: Solve for x
    x = 344,672,732.00/21,290.46
  6. Step 6: Final answer
    x = 16,189.07

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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.