Home / 23,166.20-31,969.36-12,555.78

Finding the Fourth Proportional to 23,166.20, 31,969.36 and 12,555.78

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Solution

The fourth proportional to 23,166.20, 31,969.36 and 12,555.78 is: 17,326.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,166.20 : 31,969.36 = 12,555.78 : x
  2. Step 2: Convert to fraction form
    23,166.20/31,969.36 = 12,555.78/x
  3. Step 3: Cross multiply
    23,166.20x = 31,969.36 × 12,555.78
  4. Step 4: Simplify right side
    23,166.20x = 401,400,250.90
  5. Step 5: Solve for x
    x = 401,400,250.90/23,166.20
  6. Step 6: Final answer
    x = 17,326.98

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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.