Home / 30,911.73-42,658.23-16,764.58

Finding the Fourth Proportional to 30,911.73, 42,658.23 and 16,764.58

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Solution

The fourth proportional to 30,911.73, 42,658.23 and 16,764.58 is: 23,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.73 : 42,658.23 = 16,764.58 : x
  2. Step 2: Convert to fraction form
    30,911.73/42,658.23 = 16,764.58/x
  3. Step 3: Cross multiply
    30,911.73x = 42,658.23 × 16,764.58
  4. Step 4: Simplify right side
    30,911.73x = 715,147,309.49
  5. Step 5: Solve for x
    x = 715,147,309.49/30,911.73
  6. Step 6: Final answer
    x = 23,135.15

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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.