Home / 19,638.88-27,101.62-11,142.67

Finding the Fourth Proportional to 19,638.88, 27,101.62 and 11,142.67

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Solution

The fourth proportional to 19,638.88, 27,101.62 and 11,142.67 is: 15,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.88 : 27,101.62 = 11,142.67 : x
  2. Step 2: Convert to fraction form
    19,638.88/27,101.62 = 11,142.67/x
  3. Step 3: Cross multiply
    19,638.88x = 27,101.62 × 11,142.67
  4. Step 4: Simplify right side
    19,638.88x = 301,984,408.13
  5. Step 5: Solve for x
    x = 301,984,408.13/19,638.88
  6. Step 6: Final answer
    x = 15,376.87

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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.