Home / 21,780.36-32,393.88-21,362.04

Finding the Fourth Proportional to 21,780.36, 32,393.88 and 21,362.04

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Solution

The fourth proportional to 21,780.36, 32,393.88 and 21,362.04 is: 31,771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.36 : 32,393.88 = 21,362.04 : x
  2. Step 2: Convert to fraction form
    21,780.36/32,393.88 = 21,362.04/x
  3. Step 3: Cross multiply
    21,780.36x = 32,393.88 × 21,362.04
  4. Step 4: Simplify right side
    21,780.36x = 691,999,360.32
  5. Step 5: Solve for x
    x = 691,999,360.32/21,780.36
  6. Step 6: Final answer
    x = 31,771.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.