Home / 19,710.86-29,550.32-13,455.12

Finding the Fourth Proportional to 19,710.86, 29,550.32 and 13,455.12

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Solution

The fourth proportional to 19,710.86, 29,550.32 and 13,455.12 is: 20,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,710.86 : 29,550.32 = 13,455.12 : x
  2. Step 2: Convert to fraction form
    19,710.86/29,550.32 = 13,455.12/x
  3. Step 3: Cross multiply
    19,710.86x = 29,550.32 × 13,455.12
  4. Step 4: Simplify right side
    19,710.86x = 397,603,101.64
  5. Step 5: Solve for x
    x = 397,603,101.64/19,710.86
  6. Step 6: Final answer
    x = 20,171.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.