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Finding the Fourth Proportional to 25,161.80, 37,710.30 and 19,289.30

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Solution

The fourth proportional to 25,161.80, 37,710.30 and 19,289.30 is: 28,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,161.80 : 37,710.30 = 19,289.30 : x
  2. Step 2: Convert to fraction form
    25,161.80/37,710.30 = 19,289.30/x
  3. Step 3: Cross multiply
    25,161.80x = 37,710.30 × 19,289.30
  4. Step 4: Simplify right side
    25,161.80x = 727,405,289.79
  5. Step 5: Solve for x
    x = 727,405,289.79/25,161.80
  6. Step 6: Final answer
    x = 28,909.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.