Home / 18,214.19-27,328.16-7,128.80

Finding the Fourth Proportional to 18,214.19, 27,328.16 and 7,128.80

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Solution

The fourth proportional to 18,214.19, 27,328.16 and 7,128.80 is: 10,695.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,214.19 : 27,328.16 = 7,128.80 : x
  2. Step 2: Convert to fraction form
    18,214.19/27,328.16 = 7,128.80/x
  3. Step 3: Cross multiply
    18,214.19x = 27,328.16 × 7,128.80
  4. Step 4: Simplify right side
    18,214.19x = 194,816,868.19
  5. Step 5: Solve for x
    x = 194,816,868.19/18,214.19
  6. Step 6: Final answer
    x = 10,695.89

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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.