Home / 20,108.70-30,187.35-19,962.90

Finding the Fourth Proportional to 20,108.70, 30,187.35 and 19,962.90

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Solution

The fourth proportional to 20,108.70, 30,187.35 and 19,962.90 is: 29,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.70 : 30,187.35 = 19,962.90 : x
  2. Step 2: Convert to fraction form
    20,108.70/30,187.35 = 19,962.90/x
  3. Step 3: Cross multiply
    20,108.70x = 30,187.35 × 19,962.90
  4. Step 4: Simplify right side
    20,108.70x = 602,627,049.32
  5. Step 5: Solve for x
    x = 602,627,049.32/20,108.70
  6. Step 6: Final answer
    x = 29,968.47

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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.