Home / 18,318.03-27,478.85-5,170.51

Finding the Fourth Proportional to 18,318.03, 27,478.85 and 5,170.51

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Solution

The fourth proportional to 18,318.03, 27,478.85 and 5,170.51 is: 7,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.03 : 27,478.85 = 5,170.51 : x
  2. Step 2: Convert to fraction form
    18,318.03/27,478.85 = 5,170.51/x
  3. Step 3: Cross multiply
    18,318.03x = 27,478.85 × 5,170.51
  4. Step 4: Simplify right side
    18,318.03x = 142,079,668.71
  5. Step 5: Solve for x
    x = 142,079,668.71/18,318.03
  6. Step 6: Final answer
    x = 7,756.27

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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.