Home / 30,971.48-42,740.82-16,824.44

Finding the Fourth Proportional to 30,971.48, 42,740.82 and 16,824.44

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Solution

The fourth proportional to 30,971.48, 42,740.82 and 16,824.44 is: 23,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.48 : 42,740.82 = 16,824.44 : x
  2. Step 2: Convert to fraction form
    30,971.48/42,740.82 = 16,824.44/x
  3. Step 3: Cross multiply
    30,971.48x = 42,740.82 × 16,824.44
  4. Step 4: Simplify right side
    30,971.48x = 719,090,361.64
  5. Step 5: Solve for x
    x = 719,090,361.64/30,971.48
  6. Step 6: Final answer
    x = 23,217.82

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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.