Home / 20,156.02-30,206.43-15,221.62

Finding the Fourth Proportional to 20,156.02, 30,206.43 and 15,221.62

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Solution

The fourth proportional to 20,156.02, 30,206.43 and 15,221.62 is: 22,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.02 : 30,206.43 = 15,221.62 : x
  2. Step 2: Convert to fraction form
    20,156.02/30,206.43 = 15,221.62/x
  3. Step 3: Cross multiply
    20,156.02x = 30,206.43 × 15,221.62
  4. Step 4: Simplify right side
    20,156.02x = 459,790,799.02
  5. Step 5: Solve for x
    x = 459,790,799.02/20,156.02
  6. Step 6: Final answer
    x = 22,811.59

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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.