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Finding the Fourth Proportional to 18,808.48, 25,917.84 and 14,058.40

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Solution

The fourth proportional to 18,808.48, 25,917.84 and 14,058.40 is: 19,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.48 : 25,917.84 = 14,058.40 : x
  2. Step 2: Convert to fraction form
    18,808.48/25,917.84 = 14,058.40/x
  3. Step 3: Cross multiply
    18,808.48x = 25,917.84 × 14,058.40
  4. Step 4: Simplify right side
    18,808.48x = 364,363,361.86
  5. Step 5: Solve for x
    x = 364,363,361.86/18,808.48
  6. Step 6: Final answer
    x = 19,372.29

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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.