Home / 21,816.56-29,897.06-19,717.04

Finding the Fourth Proportional to 21,816.56, 29,897.06 and 19,717.04

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Solution

The fourth proportional to 21,816.56, 29,897.06 and 19,717.04 is: 27,019.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.56 : 29,897.06 = 19,717.04 : x
  2. Step 2: Convert to fraction form
    21,816.56/29,897.06 = 19,717.04/x
  3. Step 3: Cross multiply
    21,816.56x = 29,897.06 × 19,717.04
  4. Step 4: Simplify right side
    21,816.56x = 589,481,527.90
  5. Step 5: Solve for x
    x = 589,481,527.90/21,816.56
  6. Step 6: Final answer
    x = 27,019.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.