Home / 28,743.96-39,644.16-18,675.63

Finding the Fourth Proportional to 28,743.96, 39,644.16 and 18,675.63

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Solution

The fourth proportional to 28,743.96, 39,644.16 and 18,675.63 is: 25,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,743.96 : 39,644.16 = 18,675.63 : x
  2. Step 2: Convert to fraction form
    28,743.96/39,644.16 = 18,675.63/x
  3. Step 3: Cross multiply
    28,743.96x = 39,644.16 × 18,675.63
  4. Step 4: Simplify right side
    28,743.96x = 740,379,663.82
  5. Step 5: Solve for x
    x = 740,379,663.82/28,743.96
  6. Step 6: Final answer
    x = 25,757.75

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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.