Home / 13,318.83-19,959.79-8,379.63

Finding the Fourth Proportional to 13,318.83, 19,959.79 and 8,379.63

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Solution

The fourth proportional to 13,318.83, 19,959.79 and 8,379.63 is: 12,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.83 : 19,959.79 = 8,379.63 : x
  2. Step 2: Convert to fraction form
    13,318.83/19,959.79 = 8,379.63/x
  3. Step 3: Cross multiply
    13,318.83x = 19,959.79 × 8,379.63
  4. Step 4: Simplify right side
    13,318.83x = 167,255,617.27
  5. Step 5: Solve for x
    x = 167,255,617.27/13,318.83
  6. Step 6: Final answer
    x = 12,557.83

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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.