Home / 13,320.14-18,379.49-7,653.56

Finding the Fourth Proportional to 13,320.14, 18,379.49 and 7,653.56

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Solution

The fourth proportional to 13,320.14, 18,379.49 and 7,653.56 is: 10,560.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.14 : 18,379.49 = 7,653.56 : x
  2. Step 2: Convert to fraction form
    13,320.14/18,379.49 = 7,653.56/x
  3. Step 3: Cross multiply
    13,320.14x = 18,379.49 × 7,653.56
  4. Step 4: Simplify right side
    13,320.14x = 140,668,399.32
  5. Step 5: Solve for x
    x = 140,668,399.32/13,320.14
  6. Step 6: Final answer
    x = 10,560.58

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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.