Home / 20,156.40-30,202.20-16,851.60

Finding the Fourth Proportional to 20,156.40, 30,202.20 and 16,851.60

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Solution

The fourth proportional to 20,156.40, 30,202.20 and 16,851.60 is: 25,250.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.40 : 30,202.20 = 16,851.60 : x
  2. Step 2: Convert to fraction form
    20,156.40/30,202.20 = 16,851.60/x
  3. Step 3: Cross multiply
    20,156.40x = 30,202.20 × 16,851.60
  4. Step 4: Simplify right side
    20,156.40x = 508,955,393.52
  5. Step 5: Solve for x
    x = 508,955,393.52/20,156.40
  6. Step 6: Final answer
    x = 25,250.31

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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.