Home / 16,991.10-23,420.44-11,538.45

Finding the Fourth Proportional to 16,991.10, 23,420.44 and 11,538.45

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Solution

The fourth proportional to 16,991.10, 23,420.44 and 11,538.45 is: 15,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991.10 : 23,420.44 = 11,538.45 : x
  2. Step 2: Convert to fraction form
    16,991.10/23,420.44 = 11,538.45/x
  3. Step 3: Cross multiply
    16,991.10x = 23,420.44 × 11,538.45
  4. Step 4: Simplify right side
    16,991.10x = 270,235,518.23
  5. Step 5: Solve for x
    x = 270,235,518.23/16,991.10
  6. Step 6: Final answer
    x = 15,904.54

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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.