Home / 21,020.36-29,007.20-11,460.02

Finding the Fourth Proportional to 21,020.36, 29,007.20 and 11,460.02

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Solution

The fourth proportional to 21,020.36, 29,007.20 and 11,460.02 is: 15,814.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.36 : 29,007.20 = 11,460.02 : x
  2. Step 2: Convert to fraction form
    21,020.36/29,007.20 = 11,460.02/x
  3. Step 3: Cross multiply
    21,020.36x = 29,007.20 × 11,460.02
  4. Step 4: Simplify right side
    21,020.36x = 332,423,092.14
  5. Step 5: Solve for x
    x = 332,423,092.14/21,020.36
  6. Step 6: Final answer
    x = 15,814.34

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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.