Home / 13,171.80-18,165.93-11,859.60

Finding the Fourth Proportional to 13,171.80, 18,165.93 and 11,859.60

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Solution

The fourth proportional to 13,171.80, 18,165.93 and 11,859.60 is: 16,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.80 : 18,165.93 = 11,859.60 : x
  2. Step 2: Convert to fraction form
    13,171.80/18,165.93 = 11,859.60/x
  3. Step 3: Cross multiply
    13,171.80x = 18,165.93 × 11,859.60
  4. Step 4: Simplify right side
    13,171.80x = 215,440,663.43
  5. Step 5: Solve for x
    x = 215,440,663.43/13,171.80
  6. Step 6: Final answer
    x = 16,356.21

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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.