Home / 19,905.80-29,858.70-18,156.20

Finding the Fourth Proportional to 19,905.80, 29,858.70 and 18,156.20

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Solution

The fourth proportional to 19,905.80, 29,858.70 and 18,156.20 is: 27,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.80 : 29,858.70 = 18,156.20 : x
  2. Step 2: Convert to fraction form
    19,905.80/29,858.70 = 18,156.20/x
  3. Step 3: Cross multiply
    19,905.80x = 29,858.70 × 18,156.20
  4. Step 4: Simplify right side
    19,905.80x = 542,120,528.94
  5. Step 5: Solve for x
    x = 542,120,528.94/19,905.80
  6. Step 6: Final answer
    x = 27,234.30

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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.