Home / 36,395.76-50,222.40-20,478.90

Finding the Fourth Proportional to 36,395.76, 50,222.40 and 20,478.90

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Solution

The fourth proportional to 36,395.76, 50,222.40 and 20,478.90 is: 28,258.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,395.76 : 50,222.40 = 20,478.90 : x
  2. Step 2: Convert to fraction form
    36,395.76/50,222.40 = 20,478.90/x
  3. Step 3: Cross multiply
    36,395.76x = 50,222.40 × 20,478.90
  4. Step 4: Simplify right side
    36,395.76x = 1,028,499,507.36
  5. Step 5: Solve for x
    x = 1,028,499,507.36/36,395.76
  6. Step 6: Final answer
    x = 28,258.77

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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.