Home / 30,871.55-42,602.67-16,724.43

Finding the Fourth Proportional to 30,871.55, 42,602.67 and 16,724.43

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Solution

The fourth proportional to 30,871.55, 42,602.67 and 16,724.43 is: 23,079.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.55 : 42,602.67 = 16,724.43 : x
  2. Step 2: Convert to fraction form
    30,871.55/42,602.67 = 16,724.43/x
  3. Step 3: Cross multiply
    30,871.55x = 42,602.67 × 16,724.43
  4. Step 4: Simplify right side
    30,871.55x = 712,505,372.23
  5. Step 5: Solve for x
    x = 712,505,372.23/30,871.55
  6. Step 6: Final answer
    x = 23,079.68

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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.