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Finding the Fourth Proportional to 18,588, 25,650.72 and 10,631.28

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Solution

The fourth proportional to 18,588, 25,650.72 and 10,631.28 is: 14,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588 : 25,650.72 = 10,631.28 : x
  2. Step 2: Convert to fraction form
    18,588/25,650.72 = 10,631.28/x
  3. Step 3: Cross multiply
    18,588x = 25,650.72 × 10,631.28
  4. Step 4: Simplify right side
    18,588x = 272,699,986.52
  5. Step 5: Solve for x
    x = 272,699,986.52/18,588
  6. Step 6: Final answer
    x = 14,670.75

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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.