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Finding the Fourth Proportional to 17,682.60, 24,400.80 and 10,128.96

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Solution

The fourth proportional to 17,682.60, 24,400.80 and 10,128.96 is: 13,977.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,682.60 : 24,400.80 = 10,128.96 : x
  2. Step 2: Convert to fraction form
    17,682.60/24,400.80 = 10,128.96/x
  3. Step 3: Cross multiply
    17,682.60x = 24,400.80 × 10,128.96
  4. Step 4: Simplify right side
    17,682.60x = 247,154,727.17
  5. Step 5: Solve for x
    x = 247,154,727.17/17,682.60
  6. Step 6: Final answer
    x = 13,977.28

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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.