Home / 19,137.89-26,408.90-11,971.04

Finding the Fourth Proportional to 19,137.89, 26,408.90 and 11,971.04

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Solution

The fourth proportional to 19,137.89, 26,408.90 and 11,971.04 is: 16,519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.89 : 26,408.90 = 11,971.04 : x
  2. Step 2: Convert to fraction form
    19,137.89/26,408.90 = 11,971.04/x
  3. Step 3: Cross multiply
    19,137.89x = 26,408.90 × 11,971.04
  4. Step 4: Simplify right side
    19,137.89x = 316,141,806.36
  5. Step 5: Solve for x
    x = 316,141,806.36/19,137.89
  6. Step 6: Final answer
    x = 16,519.16

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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.