Home / 21,019.62-29,004.72-11,586.36

Finding the Fourth Proportional to 21,019.62, 29,004.72 and 11,586.36

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Solution

The fourth proportional to 21,019.62, 29,004.72 and 11,586.36 is: 15,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.62 : 29,004.72 = 11,586.36 : x
  2. Step 2: Convert to fraction form
    21,019.62/29,004.72 = 11,586.36/x
  3. Step 3: Cross multiply
    21,019.62x = 29,004.72 × 11,586.36
  4. Step 4: Simplify right side
    21,019.62x = 336,059,127.62
  5. Step 5: Solve for x
    x = 336,059,127.62/21,019.62
  6. Step 6: Final answer
    x = 15,987.88

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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.