Home / 13,278.58-19,909.99-5,879.30

Finding the Fourth Proportional to 13,278.58, 19,909.99 and 5,879.30

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Solution

The fourth proportional to 13,278.58, 19,909.99 and 5,879.30 is: 8,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.58 : 19,909.99 = 5,879.30 : x
  2. Step 2: Convert to fraction form
    13,278.58/19,909.99 = 5,879.30/x
  3. Step 3: Cross multiply
    13,278.58x = 19,909.99 × 5,879.30
  4. Step 4: Simplify right side
    13,278.58x = 117,056,804.21
  5. Step 5: Solve for x
    x = 117,056,804.21/13,278.58
  6. Step 6: Final answer
    x = 8,815.46

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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.