Home / 12,159.66-16,791.39-9,170.38

Finding the Fourth Proportional to 12,159.66, 16,791.39 and 9,170.38

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Solution

The fourth proportional to 12,159.66, 16,791.39 and 9,170.38 is: 12,663.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.66 : 16,791.39 = 9,170.38 : x
  2. Step 2: Convert to fraction form
    12,159.66/16,791.39 = 9,170.38/x
  3. Step 3: Cross multiply
    12,159.66x = 16,791.39 × 9,170.38
  4. Step 4: Simplify right side
    12,159.66x = 153,983,427.03
  5. Step 5: Solve for x
    x = 153,983,427.03/12,159.66
  6. Step 6: Final answer
    x = 12,663.46

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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.