Home / 21,759.36-30,101.40-20,972.04

Finding the Fourth Proportional to 21,759.36, 30,101.40 and 20,972.04

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Solution

The fourth proportional to 21,759.36, 30,101.40 and 20,972.04 is: 29,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.36 : 30,101.40 = 20,972.04 : x
  2. Step 2: Convert to fraction form
    21,759.36/30,101.40 = 20,972.04/x
  3. Step 3: Cross multiply
    21,759.36x = 30,101.40 × 20,972.04
  4. Step 4: Simplify right side
    21,759.36x = 631,287,764.86
  5. Step 5: Solve for x
    x = 631,287,764.86/21,759.36
  6. Step 6: Final answer
    x = 29,012.24

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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.