Home / 13,979.85-19,295.99-8,316.73

Finding the Fourth Proportional to 13,979.85, 19,295.99 and 8,316.73

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Solution

The fourth proportional to 13,979.85, 19,295.99 and 8,316.73 is: 11,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.85 : 19,295.99 = 8,316.73 : x
  2. Step 2: Convert to fraction form
    13,979.85/19,295.99 = 8,316.73/x
  3. Step 3: Cross multiply
    13,979.85x = 19,295.99 × 8,316.73
  4. Step 4: Simplify right side
    13,979.85x = 160,479,538.91
  5. Step 5: Solve for x
    x = 160,479,538.91/13,979.85
  6. Step 6: Final answer
    x = 11,479.35

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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.