Home / 13,739.31-18,960.40-7,451.82

Finding the Fourth Proportional to 13,739.31, 18,960.40 and 7,451.82

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Solution

The fourth proportional to 13,739.31, 18,960.40 and 7,451.82 is: 10,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.31 : 18,960.40 = 7,451.82 : x
  2. Step 2: Convert to fraction form
    13,739.31/18,960.40 = 7,451.82/x
  3. Step 3: Cross multiply
    13,739.31x = 18,960.40 × 7,451.82
  4. Step 4: Simplify right side
    13,739.31x = 141,289,487.93
  5. Step 5: Solve for x
    x = 141,289,487.93/13,739.31
  6. Step 6: Final answer
    x = 10,283.59

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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.