Home / 18,320.69-27,480.58-5,172.87

Finding the Fourth Proportional to 18,320.69, 27,480.58 and 5,172.87

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Solution

The fourth proportional to 18,320.69, 27,480.58 and 5,172.87 is: 7,759.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.69 : 27,480.58 = 5,172.87 : x
  2. Step 2: Convert to fraction form
    18,320.69/27,480.58 = 5,172.87/x
  3. Step 3: Cross multiply
    18,320.69x = 27,480.58 × 5,172.87
  4. Step 4: Simplify right side
    18,320.69x = 142,153,454.93
  5. Step 5: Solve for x
    x = 142,153,454.93/18,320.69
  6. Step 6: Final answer
    x = 7,759.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.