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Finding the Fourth Proportional to 30,347.46, 45,520.65 and 11,879.46

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Solution

The fourth proportional to 30,347.46, 45,520.65 and 11,879.46 is: 17,818.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.46 : 45,520.65 = 11,879.46 : x
  2. Step 2: Convert to fraction form
    30,347.46/45,520.65 = 11,879.46/x
  3. Step 3: Cross multiply
    30,347.46x = 45,520.65 × 11,879.46
  4. Step 4: Simplify right side
    30,347.46x = 540,760,740.85
  5. Step 5: Solve for x
    x = 540,760,740.85/30,347.46
  6. Step 6: Final answer
    x = 17,818.98

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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.