Home / 13,730.20-20,595.30-8,189.80

Finding the Fourth Proportional to 13,730.20, 20,595.30 and 8,189.80

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Solution

The fourth proportional to 13,730.20, 20,595.30 and 8,189.80 is: 12,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.20 : 20,595.30 = 8,189.80 : x
  2. Step 2: Convert to fraction form
    13,730.20/20,595.30 = 8,189.80/x
  3. Step 3: Cross multiply
    13,730.20x = 20,595.30 × 8,189.80
  4. Step 4: Simplify right side
    13,730.20x = 168,671,387.94
  5. Step 5: Solve for x
    x = 168,671,387.94/13,730.20
  6. Step 6: Final answer
    x = 12,284.70

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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.