Home / 17,378.55-23,982.39-9,420.75

Finding the Fourth Proportional to 17,378.55, 23,982.39 and 9,420.75

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Solution

The fourth proportional to 17,378.55, 23,982.39 and 9,420.75 is: 13,000.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,378.55 : 23,982.39 = 9,420.75 : x
  2. Step 2: Convert to fraction form
    17,378.55/23,982.39 = 9,420.75/x
  3. Step 3: Cross multiply
    17,378.55x = 23,982.39 × 9,420.75
  4. Step 4: Simplify right side
    17,378.55x = 225,932,100.59
  5. Step 5: Solve for x
    x = 225,932,100.59/17,378.55
  6. Step 6: Final answer
    x = 13,000.63

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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.