Home / 13,278.72-19,908.77-5,879.17

Finding the Fourth Proportional to 13,278.72, 19,908.77 and 5,879.17

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Solution

The fourth proportional to 13,278.72, 19,908.77 and 5,879.17 is: 8,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.72 : 19,908.77 = 5,879.17 : x
  2. Step 2: Convert to fraction form
    13,278.72/19,908.77 = 5,879.17/x
  3. Step 3: Cross multiply
    13,278.72x = 19,908.77 × 5,879.17
  4. Step 4: Simplify right side
    13,278.72x = 117,047,043.32
  5. Step 5: Solve for x
    x = 117,047,043.32/13,278.72
  6. Step 6: Final answer
    x = 8,814.63

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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.