Home / 20,337.82-28,051.72-18,664.63

Finding the Fourth Proportional to 20,337.82, 28,051.72 and 18,664.63

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Solution

The fourth proportional to 20,337.82, 28,051.72 and 18,664.63 is: 25,743.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.82 : 28,051.72 = 18,664.63 : x
  2. Step 2: Convert to fraction form
    20,337.82/28,051.72 = 18,664.63/x
  3. Step 3: Cross multiply
    20,337.82x = 28,051.72 × 18,664.63
  4. Step 4: Simplify right side
    20,337.82x = 523,574,974.66
  5. Step 5: Solve for x
    x = 523,574,974.66/20,337.82
  6. Step 6: Final answer
    x = 25,743.91

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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.