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Finding the Fourth Proportional to 30,615.69, 45,879.69 and 17,440.86

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Solution

The fourth proportional to 30,615.69, 45,879.69 and 17,440.86 is: 26,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.69 : 45,879.69 = 17,440.86 : x
  2. Step 2: Convert to fraction form
    30,615.69/45,879.69 = 17,440.86/x
  3. Step 3: Cross multiply
    30,615.69x = 45,879.69 × 17,440.86
  4. Step 4: Simplify right side
    30,615.69x = 800,181,250.13
  5. Step 5: Solve for x
    x = 800,181,250.13/30,615.69
  6. Step 6: Final answer
    x = 26,136.31

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1.5x scale

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.