Home / 18,287.08-27,431.72-5,140.48

Finding the Fourth Proportional to 18,287.08, 27,431.72 and 5,140.48

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Solution

The fourth proportional to 18,287.08, 27,431.72 and 5,140.48 is: 7,711.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.08 : 27,431.72 = 5,140.48 : x
  2. Step 2: Convert to fraction form
    18,287.08/27,431.72 = 5,140.48/x
  3. Step 3: Cross multiply
    18,287.08x = 27,431.72 × 5,140.48
  4. Step 4: Simplify right side
    18,287.08x = 141,012,208.03
  5. Step 5: Solve for x
    x = 141,012,208.03/18,287.08
  6. Step 6: Final answer
    x = 7,711.03

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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.