Home / 20,173.90-30,271.65-8,488.30

Finding the Fourth Proportional to 20,173.90, 30,271.65 and 8,488.30

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Solution

The fourth proportional to 20,173.90, 30,271.65 and 8,488.30 is: 12,736.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.90 : 30,271.65 = 8,488.30 : x
  2. Step 2: Convert to fraction form
    20,173.90/30,271.65 = 8,488.30/x
  3. Step 3: Cross multiply
    20,173.90x = 30,271.65 × 8,488.30
  4. Step 4: Simplify right side
    20,173.90x = 256,954,846.70
  5. Step 5: Solve for x
    x = 256,954,846.70/20,173.90
  6. Step 6: Final answer
    x = 12,736.99

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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.