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Finding the Fourth Proportional to 18,590.78, 25,655.31 and 10,092.90

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Solution

The fourth proportional to 18,590.78, 25,655.31 and 10,092.90 is: 13,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.78 : 25,655.31 = 10,092.90 : x
  2. Step 2: Convert to fraction form
    18,590.78/25,655.31 = 10,092.90/x
  3. Step 3: Cross multiply
    18,590.78x = 25,655.31 × 10,092.90
  4. Step 4: Simplify right side
    18,590.78x = 258,936,453.07
  5. Step 5: Solve for x
    x = 258,936,453.07/18,590.78
  6. Step 6: Final answer
    x = 13,928.22

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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.