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Finding the Fourth Proportional to 25,953.96, 35,779.14 and 18,489

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Solution

The fourth proportional to 25,953.96, 35,779.14 and 18,489 is: 25,488.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,953.96 : 35,779.14 = 18,489 : x
  2. Step 2: Convert to fraction form
    25,953.96/35,779.14 = 18,489/x
  3. Step 3: Cross multiply
    25,953.96x = 35,779.14 × 18,489
  4. Step 4: Simplify right side
    25,953.96x = 661,520,519.46
  5. Step 5: Solve for x
    x = 661,520,519.46/25,953.96
  6. Step 6: Final answer
    x = 25,488.23

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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.