Home / 13,245.58-18,284.10-7,939.37

Finding the Fourth Proportional to 13,245.58, 18,284.10 and 7,939.37

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Solution

The fourth proportional to 13,245.58, 18,284.10 and 7,939.37 is: 10,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.58 : 18,284.10 = 7,939.37 : x
  2. Step 2: Convert to fraction form
    13,245.58/18,284.10 = 7,939.37/x
  3. Step 3: Cross multiply
    13,245.58x = 18,284.10 × 7,939.37
  4. Step 4: Simplify right side
    13,245.58x = 145,164,235.02
  5. Step 5: Solve for x
    x = 145,164,235.02/13,245.58
  6. Step 6: Final answer
    x = 10,959.45

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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.