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Finding the Fourth Proportional to 18,157.80, 25,060.68 and 16,971.96

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Solution

The fourth proportional to 18,157.80, 25,060.68 and 16,971.96 is: 23,424.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157.80 : 25,060.68 = 16,971.96 : x
  2. Step 2: Convert to fraction form
    18,157.80/25,060.68 = 16,971.96/x
  3. Step 3: Cross multiply
    18,157.80x = 25,060.68 × 16,971.96
  4. Step 4: Simplify right side
    18,157.80x = 425,328,858.53
  5. Step 5: Solve for x
    x = 425,328,858.53/18,157.80
  6. Step 6: Final answer
    x = 23,424.03

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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.