Home / 13,721.60-18,939.42-9,473.36

Finding the Fourth Proportional to 13,721.60, 18,939.42 and 9,473.36

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Solution

The fourth proportional to 13,721.60, 18,939.42 and 9,473.36 is: 13,075.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.60 : 18,939.42 = 9,473.36 : x
  2. Step 2: Convert to fraction form
    13,721.60/18,939.42 = 9,473.36/x
  3. Step 3: Cross multiply
    13,721.60x = 18,939.42 × 9,473.36
  4. Step 4: Simplify right side
    13,721.60x = 179,419,849.15
  5. Step 5: Solve for x
    x = 179,419,849.15/13,721.60
  6. Step 6: Final answer
    x = 13,075.72

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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.