Home / 13,986.30-20,979.69-4,123.34

Finding the Fourth Proportional to 13,986.30, 20,979.69 and 4,123.34

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Solution

The fourth proportional to 13,986.30, 20,979.69 and 4,123.34 is: 6,185.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.30 : 20,979.69 = 4,123.34 : x
  2. Step 2: Convert to fraction form
    13,986.30/20,979.69 = 4,123.34/x
  3. Step 3: Cross multiply
    13,986.30x = 20,979.69 × 4,123.34
  4. Step 4: Simplify right side
    13,986.30x = 86,506,269.45
  5. Step 5: Solve for x
    x = 86,506,269.45/13,986.30
  6. Step 6: Final answer
    x = 6,185.07

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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.