Home / 21,182.80-29,173.08-20,723.62

Finding the Fourth Proportional to 21,182.80, 29,173.08 and 20,723.62

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Solution

The fourth proportional to 21,182.80, 29,173.08 and 20,723.62 is: 28,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.80 : 29,173.08 = 20,723.62 : x
  2. Step 2: Convert to fraction form
    21,182.80/29,173.08 = 20,723.62/x
  3. Step 3: Cross multiply
    21,182.80x = 29,173.08 × 20,723.62
  4. Step 4: Simplify right side
    21,182.80x = 604,571,824.15
  5. Step 5: Solve for x
    x = 604,571,824.15/21,182.80
  6. Step 6: Final answer
    x = 28,540.69

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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.