Home / 30,511.46-42,105.38-16,898.21

Finding the Fourth Proportional to 30,511.46, 42,105.38 and 16,898.21

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Solution

The fourth proportional to 30,511.46, 42,105.38 and 16,898.21 is: 23,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.46 : 42,105.38 = 16,898.21 : x
  2. Step 2: Convert to fraction form
    30,511.46/42,105.38 = 16,898.21/x
  3. Step 3: Cross multiply
    30,511.46x = 42,105.38 × 16,898.21
  4. Step 4: Simplify right side
    30,511.46x = 711,505,468.88
  5. Step 5: Solve for x
    x = 711,505,468.88/30,511.46
  6. Step 6: Final answer
    x = 23,319.29

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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.