Home / 20,884.05-31,319.40-6,840.27

Finding the Fourth Proportional to 20,884.05, 31,319.40 and 6,840.27

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Solution

The fourth proportional to 20,884.05, 31,319.40 and 6,840.27 is: 10,258.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.05 : 31,319.40 = 6,840.27 : x
  2. Step 2: Convert to fraction form
    20,884.05/31,319.40 = 6,840.27/x
  3. Step 3: Cross multiply
    20,884.05x = 31,319.40 × 6,840.27
  4. Step 4: Simplify right side
    20,884.05x = 214,233,152.24
  5. Step 5: Solve for x
    x = 214,233,152.24/20,884.05
  6. Step 6: Final answer
    x = 10,258.22

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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.