Home / 21,021.63-29,009.90-11,461.62

Finding the Fourth Proportional to 21,021.63, 29,009.90 and 11,461.62

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Solution

The fourth proportional to 21,021.63, 29,009.90 and 11,461.62 is: 15,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.63 : 29,009.90 = 11,461.62 : x
  2. Step 2: Convert to fraction form
    21,021.63/29,009.90 = 11,461.62/x
  3. Step 3: Cross multiply
    21,021.63x = 29,009.90 × 11,461.62
  4. Step 4: Simplify right side
    21,021.63x = 332,500,450.04
  5. Step 5: Solve for x
    x = 332,500,450.04/21,021.63
  6. Step 6: Final answer
    x = 15,817.06

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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.