Home / 20,179.85-30,271.68-5,389.65

Finding the Fourth Proportional to 20,179.85, 30,271.68 and 5,389.65

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Solution

The fourth proportional to 20,179.85, 30,271.68 and 5,389.65 is: 8,084.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.85 : 30,271.68 = 5,389.65 : x
  2. Step 2: Convert to fraction form
    20,179.85/30,271.68 = 5,389.65/x
  3. Step 3: Cross multiply
    20,179.85x = 30,271.68 × 5,389.65
  4. Step 4: Simplify right side
    20,179.85x = 163,153,760.11
  5. Step 5: Solve for x
    x = 163,153,760.11/20,179.85
  6. Step 6: Final answer
    x = 8,084.99

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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.