Home / 21,743.21-30,001.52-20,635.94

Finding the Fourth Proportional to 21,743.21, 30,001.52 and 20,635.94

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Solution

The fourth proportional to 21,743.21, 30,001.52 and 20,635.94 is: 28,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,743.21 : 30,001.52 = 20,635.94 : x
  2. Step 2: Convert to fraction form
    21,743.21/30,001.52 = 20,635.94/x
  3. Step 3: Cross multiply
    21,743.21x = 30,001.52 × 20,635.94
  4. Step 4: Simplify right side
    21,743.21x = 619,109,463.45
  5. Step 5: Solve for x
    x = 619,109,463.45/21,743.21
  6. Step 6: Final answer
    x = 28,473.69

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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.