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Finding the Fourth Proportional to 18,415.44, 25,412.76 and 10,239

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Solution

The fourth proportional to 18,415.44, 25,412.76 and 10,239 is: 14,129.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.44 : 25,412.76 = 10,239 : x
  2. Step 2: Convert to fraction form
    18,415.44/25,412.76 = 10,239/x
  3. Step 3: Cross multiply
    18,415.44x = 25,412.76 × 10,239
  4. Step 4: Simplify right side
    18,415.44x = 260,201,249.64
  5. Step 5: Solve for x
    x = 260,201,249.64/18,415.44
  6. Step 6: Final answer
    x = 14,129.52

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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.