Home / 20,117.40-30,176.10-13,896.60

Finding the Fourth Proportional to 20,117.40, 30,176.10 and 13,896.60

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Solution

The fourth proportional to 20,117.40, 30,176.10 and 13,896.60 is: 20,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.40 : 30,176.10 = 13,896.60 : x
  2. Step 2: Convert to fraction form
    20,117.40/30,176.10 = 13,896.60/x
  3. Step 3: Cross multiply
    20,117.40x = 30,176.10 × 13,896.60
  4. Step 4: Simplify right side
    20,117.40x = 419,345,191.26
  5. Step 5: Solve for x
    x = 419,345,191.26/20,117.40
  6. Step 6: Final answer
    x = 20,844.90

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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.