Home / 20,178.76-30,216.30-12,363.88

Finding the Fourth Proportional to 20,178.76, 30,216.30 and 12,363.88

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Solution

The fourth proportional to 20,178.76, 30,216.30 and 12,363.88 is: 18,514.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.76 : 30,216.30 = 12,363.88 : x
  2. Step 2: Convert to fraction form
    20,178.76/30,216.30 = 12,363.88/x
  3. Step 3: Cross multiply
    20,178.76x = 30,216.30 × 12,363.88
  4. Step 4: Simplify right side
    20,178.76x = 373,590,707.24
  5. Step 5: Solve for x
    x = 373,590,707.24/20,178.76
  6. Step 6: Final answer
    x = 18,514.06

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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.