Home / 13,979.91-20,962.61-4,117.89

Finding the Fourth Proportional to 13,979.91, 20,962.61 and 4,117.89

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Solution

The fourth proportional to 13,979.91, 20,962.61 and 4,117.89 is: 6,174.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.91 : 20,962.61 = 4,117.89 : x
  2. Step 2: Convert to fraction form
    13,979.91/20,962.61 = 4,117.89/x
  3. Step 3: Cross multiply
    13,979.91x = 20,962.61 × 4,117.89
  4. Step 4: Simplify right side
    13,979.91x = 86,321,722.09
  5. Step 5: Solve for x
    x = 86,321,722.09/13,979.91
  6. Step 6: Final answer
    x = 6,174.70

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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.