Home / 18,485.40-27,731.70-5,338.20

Finding the Fourth Proportional to 18,485.40, 27,731.70 and 5,338.20

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Solution

The fourth proportional to 18,485.40, 27,731.70 and 5,338.20 is: 8,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.40 : 27,731.70 = 5,338.20 : x
  2. Step 2: Convert to fraction form
    18,485.40/27,731.70 = 5,338.20/x
  3. Step 3: Cross multiply
    18,485.40x = 27,731.70 × 5,338.20
  4. Step 4: Simplify right side
    18,485.40x = 148,037,360.94
  5. Step 5: Solve for x
    x = 148,037,360.94/18,485.40
  6. Step 6: Final answer
    x = 8,008.34

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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.