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Finding the Fourth Proportional to 18,514, 25,549.50 and 10,130.68

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Solution

The fourth proportional to 18,514, 25,549.50 and 10,130.68 is: 13,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514 : 25,549.50 = 10,130.68 : x
  2. Step 2: Convert to fraction form
    18,514/25,549.50 = 10,130.68/x
  3. Step 3: Cross multiply
    18,514x = 25,549.50 × 10,130.68
  4. Step 4: Simplify right side
    18,514x = 258,833,808.66
  5. Step 5: Solve for x
    x = 258,833,808.66/18,514
  6. Step 6: Final answer
    x = 13,980.44

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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.