Home / 30,911.46-42,658.14-16,764.54

Finding the Fourth Proportional to 30,911.46, 42,658.14 and 16,764.54

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Solution

The fourth proportional to 30,911.46, 42,658.14 and 16,764.54 is: 23,135.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.46 : 42,658.14 = 16,764.54 : x
  2. Step 2: Convert to fraction form
    30,911.46/42,658.14 = 16,764.54/x
  3. Step 3: Cross multiply
    30,911.46x = 42,658.14 × 16,764.54
  4. Step 4: Simplify right side
    30,911.46x = 715,144,094.36
  5. Step 5: Solve for x
    x = 715,144,094.36/30,911.46
  6. Step 6: Final answer
    x = 23,135.24

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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.