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Finding the Fourth Proportional to 20,498.40, 30,750.03 and 7,347.24

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Solution

The fourth proportional to 20,498.40, 30,750.03 and 7,347.24 is: 11,021.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.40 : 30,750.03 = 7,347.24 : x
  2. Step 2: Convert to fraction form
    20,498.40/30,750.03 = 7,347.24/x
  3. Step 3: Cross multiply
    20,498.40x = 30,750.03 × 7,347.24
  4. Step 4: Simplify right side
    20,498.40x = 225,927,850.42
  5. Step 5: Solve for x
    x = 225,927,850.42/20,498.40
  6. Step 6: Final answer
    x = 11,021.73

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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.