Home / 20,181.10-30,268.05-12,772.30

Finding the Fourth Proportional to 20,181.10, 30,268.05 and 12,772.30

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Solution

The fourth proportional to 20,181.10, 30,268.05 and 12,772.30 is: 19,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.10 : 30,268.05 = 12,772.30 : x
  2. Step 2: Convert to fraction form
    20,181.10/30,268.05 = 12,772.30/x
  3. Step 3: Cross multiply
    20,181.10x = 30,268.05 × 12,772.30
  4. Step 4: Simplify right side
    20,181.10x = 386,592,615.02
  5. Step 5: Solve for x
    x = 386,592,615.02/20,181.10
  6. Step 6: Final answer
    x = 19,156.17

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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.