Home / 20,156.02-27,812.78-11,202.90

Finding the Fourth Proportional to 20,156.02, 27,812.78 and 11,202.90

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Solution

The fourth proportional to 20,156.02, 27,812.78 and 11,202.90 is: 15,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.02 : 27,812.78 = 11,202.90 : x
  2. Step 2: Convert to fraction form
    20,156.02/27,812.78 = 11,202.90/x
  3. Step 3: Cross multiply
    20,156.02x = 27,812.78 × 11,202.90
  4. Step 4: Simplify right side
    20,156.02x = 311,583,793.06
  5. Step 5: Solve for x
    x = 311,583,793.06/20,156.02
  6. Step 6: Final answer
    x = 15,458.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.