Home / 19,885.50-27,431.19-12,329.28

Finding the Fourth Proportional to 19,885.50, 27,431.19 and 12,329.28

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Solution

The fourth proportional to 19,885.50, 27,431.19 and 12,329.28 is: 17,007.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.50 : 27,431.19 = 12,329.28 : x
  2. Step 2: Convert to fraction form
    19,885.50/27,431.19 = 12,329.28/x
  3. Step 3: Cross multiply
    19,885.50x = 27,431.19 × 12,329.28
  4. Step 4: Simplify right side
    19,885.50x = 338,206,822.24
  5. Step 5: Solve for x
    x = 338,206,822.24/19,885.50
  6. Step 6: Final answer
    x = 17,007.71

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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.