Home / 30,971.26-42,740.06-16,824.11

Finding the Fourth Proportional to 30,971.26, 42,740.06 and 16,824.11

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Solution

The fourth proportional to 30,971.26, 42,740.06 and 16,824.11 is: 23,217.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.26 : 42,740.06 = 16,824.11 : x
  2. Step 2: Convert to fraction form
    30,971.26/42,740.06 = 16,824.11/x
  3. Step 3: Cross multiply
    30,971.26x = 42,740.06 × 16,824.11
  4. Step 4: Simplify right side
    30,971.26x = 719,063,173.03
  5. Step 5: Solve for x
    x = 719,063,173.03/30,971.26
  6. Step 6: Final answer
    x = 23,217.11

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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.