Home / 21,018.70-29,004.90-11,458.36

Finding the Fourth Proportional to 21,018.70, 29,004.90 and 11,458.36

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Solution

The fourth proportional to 21,018.70, 29,004.90 and 11,458.36 is: 15,812.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.70 : 29,004.90 = 11,458.36 : x
  2. Step 2: Convert to fraction form
    21,018.70/29,004.90 = 11,458.36/x
  3. Step 3: Cross multiply
    21,018.70x = 29,004.90 × 11,458.36
  4. Step 4: Simplify right side
    21,018.70x = 332,348,440.94
  5. Step 5: Solve for x
    x = 332,348,440.94/21,018.70
  6. Step 6: Final answer
    x = 15,812.04

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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.