Home / 13,320.69-18,382.18-7,351.92

Finding the Fourth Proportional to 13,320.69, 18,382.18 and 7,351.92

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Solution

The fourth proportional to 13,320.69, 18,382.18 and 7,351.92 is: 10,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.69 : 18,382.18 = 7,351.92 : x
  2. Step 2: Convert to fraction form
    13,320.69/18,382.18 = 7,351.92/x
  3. Step 3: Cross multiply
    13,320.69x = 18,382.18 × 7,351.92
  4. Step 4: Simplify right side
    13,320.69x = 135,144,316.79
  5. Step 5: Solve for x
    x = 135,144,316.79/13,320.69
  6. Step 6: Final answer
    x = 10,145.44

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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.