Home / 18,130.38-27,189.81-5,815.50

Finding the Fourth Proportional to 18,130.38, 27,189.81 and 5,815.50

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Solution

The fourth proportional to 18,130.38, 27,189.81 and 5,815.50 is: 8,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.38 : 27,189.81 = 5,815.50 : x
  2. Step 2: Convert to fraction form
    18,130.38/27,189.81 = 5,815.50/x
  3. Step 3: Cross multiply
    18,130.38x = 27,189.81 × 5,815.50
  4. Step 4: Simplify right side
    18,130.38x = 158,122,340.06
  5. Step 5: Solve for x
    x = 158,122,340.06/18,130.38
  6. Step 6: Final answer
    x = 8,721.40

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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.