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Finding the Fourth Proportional to 18,655.76, 25,744.74 and 10,272.08

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Solution

The fourth proportional to 18,655.76, 25,744.74 and 10,272.08 is: 14,175.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.76 : 25,744.74 = 10,272.08 : x
  2. Step 2: Convert to fraction form
    18,655.76/25,744.74 = 10,272.08/x
  3. Step 3: Cross multiply
    18,655.76x = 25,744.74 × 10,272.08
  4. Step 4: Simplify right side
    18,655.76x = 264,452,028.86
  5. Step 5: Solve for x
    x = 264,452,028.86/18,655.76
  6. Step 6: Final answer
    x = 14,175.36

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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.