Home / 19,885.13-27,440.88-11,386.97

Finding the Fourth Proportional to 19,885.13, 27,440.88 and 11,386.97

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Solution

The fourth proportional to 19,885.13, 27,440.88 and 11,386.97 is: 15,713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.13 : 27,440.88 = 11,386.97 : x
  2. Step 2: Convert to fraction form
    19,885.13/27,440.88 = 11,386.97/x
  3. Step 3: Cross multiply
    19,885.13x = 27,440.88 × 11,386.97
  4. Step 4: Simplify right side
    19,885.13x = 312,468,477.33
  5. Step 5: Solve for x
    x = 312,468,477.33/19,885.13
  6. Step 6: Final answer
    x = 15,713.68

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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.