Home / 19,928.72-27,498.78-11,431.23

Finding the Fourth Proportional to 19,928.72, 27,498.78 and 11,431.23

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Solution

The fourth proportional to 19,928.72, 27,498.78 and 11,431.23 is: 15,773.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.72 : 27,498.78 = 11,431.23 : x
  2. Step 2: Convert to fraction form
    19,928.72/27,498.78 = 11,431.23/x
  3. Step 3: Cross multiply
    19,928.72x = 27,498.78 × 11,431.23
  4. Step 4: Simplify right side
    19,928.72x = 314,344,878.90
  5. Step 5: Solve for x
    x = 314,344,878.90/19,928.72
  6. Step 6: Final answer
    x = 15,773.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.