Home / 12,939.93-17,858.25-7,633.72

Finding the Fourth Proportional to 12,939.93, 17,858.25 and 7,633.72

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Solution

The fourth proportional to 12,939.93, 17,858.25 and 7,633.72 is: 10,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.93 : 17,858.25 = 7,633.72 : x
  2. Step 2: Convert to fraction form
    12,939.93/17,858.25 = 7,633.72/x
  3. Step 3: Cross multiply
    12,939.93x = 17,858.25 × 7,633.72
  4. Step 4: Simplify right side
    12,939.93x = 136,324,880.19
  5. Step 5: Solve for x
    x = 136,324,880.19/12,939.93
  6. Step 6: Final answer
    x = 10,535.21

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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.