Home / 19,380.10-26,745.72-10,885

Finding the Fourth Proportional to 19,380.10, 26,745.72 and 10,885

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Solution

The fourth proportional to 19,380.10, 26,745.72 and 10,885 is: 15,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,380.10 : 26,745.72 = 10,885 : x
  2. Step 2: Convert to fraction form
    19,380.10/26,745.72 = 10,885/x
  3. Step 3: Cross multiply
    19,380.10x = 26,745.72 × 10,885
  4. Step 4: Simplify right side
    19,380.10x = 291,127,162.20
  5. Step 5: Solve for x
    x = 291,127,162.20/19,380.10
  6. Step 6: Final answer
    x = 15,021.96

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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.