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Finding the Fourth Proportional to 18,276.96, 25,221 and 10,317.64

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Solution

The fourth proportional to 18,276.96, 25,221 and 10,317.64 is: 14,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.96 : 25,221 = 10,317.64 : x
  2. Step 2: Convert to fraction form
    18,276.96/25,221 = 10,317.64/x
  3. Step 3: Cross multiply
    18,276.96x = 25,221 × 10,317.64
  4. Step 4: Simplify right side
    18,276.96x = 260,221,198.44
  5. Step 5: Solve for x
    x = 260,221,198.44/18,276.96
  6. Step 6: Final answer
    x = 14,237.66

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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.