Home / 13,207.97-19,712.72-11,421.12

Finding the Fourth Proportional to 13,207.97, 19,712.72 and 11,421.12

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Solution

The fourth proportional to 13,207.97, 19,712.72 and 11,421.12 is: 17,045.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.97 : 19,712.72 = 11,421.12 : x
  2. Step 2: Convert to fraction form
    13,207.97/19,712.72 = 11,421.12/x
  3. Step 3: Cross multiply
    13,207.97x = 19,712.72 × 11,421.12
  4. Step 4: Simplify right side
    13,207.97x = 225,141,283.54
  5. Step 5: Solve for x
    x = 225,141,283.54/13,207.97
  6. Step 6: Final answer
    x = 17,045.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.