Home / 20,156.10-30,266.55-15,231.30

Finding the Fourth Proportional to 20,156.10, 30,266.55 and 15,231.30

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Solution

The fourth proportional to 20,156.10, 30,266.55 and 15,231.30 is: 22,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.10 : 30,266.55 = 15,231.30 : x
  2. Step 2: Convert to fraction form
    20,156.10/30,266.55 = 15,231.30/x
  3. Step 3: Cross multiply
    20,156.10x = 30,266.55 × 15,231.30
  4. Step 4: Simplify right side
    20,156.10x = 460,998,903.02
  5. Step 5: Solve for x
    x = 460,998,903.02/20,156.10
  6. Step 6: Final answer
    x = 22,871.43

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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.