Home / 18,291.72-27,434.40-5,140.97

Finding the Fourth Proportional to 18,291.72, 27,434.40 and 5,140.97

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Solution

The fourth proportional to 18,291.72, 27,434.40 and 5,140.97 is: 7,710.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.72 : 27,434.40 = 5,140.97 : x
  2. Step 2: Convert to fraction form
    18,291.72/27,434.40 = 5,140.97/x
  3. Step 3: Cross multiply
    18,291.72x = 27,434.40 × 5,140.97
  4. Step 4: Simplify right side
    18,291.72x = 141,039,373.80
  5. Step 5: Solve for x
    x = 141,039,373.80/18,291.72
  6. Step 6: Final answer
    x = 7,710.56

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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.