Home / 20,141.20-30,236.10-19,995.40

Finding the Fourth Proportional to 20,141.20, 30,236.10 and 19,995.40

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Solution

The fourth proportional to 20,141.20, 30,236.10 and 19,995.40 is: 30,017.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.20 : 30,236.10 = 19,995.40 : x
  2. Step 2: Convert to fraction form
    20,141.20/30,236.10 = 19,995.40/x
  3. Step 3: Cross multiply
    20,141.20x = 30,236.10 × 19,995.40
  4. Step 4: Simplify right side
    20,141.20x = 604,582,913.94
  5. Step 5: Solve for x
    x = 604,582,913.94/20,141.20
  6. Step 6: Final answer
    x = 30,017.22

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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.