Home / 18,603.12-25,650.63-13,879.20

Finding the Fourth Proportional to 18,603.12, 25,650.63 and 13,879.20

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Solution

The fourth proportional to 18,603.12, 25,650.63 and 13,879.20 is: 19,137.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.12 : 25,650.63 = 13,879.20 : x
  2. Step 2: Convert to fraction form
    18,603.12/25,650.63 = 13,879.20/x
  3. Step 3: Cross multiply
    18,603.12x = 25,650.63 × 13,879.20
  4. Step 4: Simplify right side
    18,603.12x = 356,010,223.90
  5. Step 5: Solve for x
    x = 356,010,223.90/18,603.12
  6. Step 6: Final answer
    x = 19,137.12

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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.