Home / 30,829.50-42,544.71-16,682.45

Finding the Fourth Proportional to 30,829.50, 42,544.71 and 16,682.45

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Solution

The fourth proportional to 30,829.50, 42,544.71 and 16,682.45 is: 23,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,829.50 : 42,544.71 = 16,682.45 : x
  2. Step 2: Convert to fraction form
    30,829.50/42,544.71 = 16,682.45/x
  3. Step 3: Cross multiply
    30,829.50x = 42,544.71 × 16,682.45
  4. Step 4: Simplify right side
    30,829.50x = 709,749,784.62
  5. Step 5: Solve for x
    x = 709,749,784.62/30,829.50
  6. Step 6: Final answer
    x = 23,021.77

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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.