Home / 12,179.81-16,791.40-7,701.32

Finding the Fourth Proportional to 12,179.81, 16,791.40 and 7,701.32

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Solution

The fourth proportional to 12,179.81, 16,791.40 and 7,701.32 is: 10,617.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.81 : 16,791.40 = 7,701.32 : x
  2. Step 2: Convert to fraction form
    12,179.81/16,791.40 = 7,701.32/x
  3. Step 3: Cross multiply
    12,179.81x = 16,791.40 × 7,701.32
  4. Step 4: Simplify right side
    12,179.81x = 129,315,944.65
  5. Step 5: Solve for x
    x = 129,315,944.65/12,179.81
  6. Step 6: Final answer
    x = 10,617.24

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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.