Home / 30,830.20-42,545.52-16,682.98

Finding the Fourth Proportional to 30,830.20, 42,545.52 and 16,682.98

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Solution

The fourth proportional to 30,830.20, 42,545.52 and 16,682.98 is: 23,022.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,830.20 : 42,545.52 = 16,682.98 : x
  2. Step 2: Convert to fraction form
    30,830.20/42,545.52 = 16,682.98/x
  3. Step 3: Cross multiply
    30,830.20x = 42,545.52 × 16,682.98
  4. Step 4: Simplify right side
    30,830.20x = 709,786,059.25
  5. Step 5: Solve for x
    x = 709,786,059.25/30,830.20
  6. Step 6: Final answer
    x = 23,022.43

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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.