Home / 20,165.10-30,320.55-19,727.70

Finding the Fourth Proportional to 20,165.10, 30,320.55 and 19,727.70

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Solution

The fourth proportional to 20,165.10, 30,320.55 and 19,727.70 is: 29,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.10 : 30,320.55 = 19,727.70 : x
  2. Step 2: Convert to fraction form
    20,165.10/30,320.55 = 19,727.70/x
  3. Step 3: Cross multiply
    20,165.10x = 30,320.55 × 19,727.70
  4. Step 4: Simplify right side
    20,165.10x = 598,154,714.24
  5. Step 5: Solve for x
    x = 598,154,714.24/20,165.10
  6. Step 6: Final answer
    x = 29,662.87

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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.