Home / 20,135.10-30,173.85-14,828.70

Finding the Fourth Proportional to 20,135.10, 30,173.85 and 14,828.70

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Solution

The fourth proportional to 20,135.10, 30,173.85 and 14,828.70 is: 22,221.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.10 : 30,173.85 = 14,828.70 : x
  2. Step 2: Convert to fraction form
    20,135.10/30,173.85 = 14,828.70/x
  3. Step 3: Cross multiply
    20,135.10x = 30,173.85 × 14,828.70
  4. Step 4: Simplify right side
    20,135.10x = 447,438,969.50
  5. Step 5: Solve for x
    x = 447,438,969.50/20,135.10
  6. Step 6: Final answer
    x = 22,221.84

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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.