Home / 13,538.88-18,694.80-9,359.28

Finding the Fourth Proportional to 13,538.88, 18,694.80 and 9,359.28

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Solution

The fourth proportional to 13,538.88, 18,694.80 and 9,359.28 is: 12,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.88 : 18,694.80 = 9,359.28 : x
  2. Step 2: Convert to fraction form
    13,538.88/18,694.80 = 9,359.28/x
  3. Step 3: Cross multiply
    13,538.88x = 18,694.80 × 9,359.28
  4. Step 4: Simplify right side
    13,538.88x = 174,969,867.74
  5. Step 5: Solve for x
    x = 174,969,867.74/13,538.88
  6. Step 6: Final answer
    x = 12,923.51

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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.