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Finding the Fourth Proportional to 21,195.70, 31,793.55 and 7,346.10

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Solution

The fourth proportional to 21,195.70, 31,793.55 and 7,346.10 is: 11,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.70 : 31,793.55 = 7,346.10 : x
  2. Step 2: Convert to fraction form
    21,195.70/31,793.55 = 7,346.10/x
  3. Step 3: Cross multiply
    21,195.70x = 31,793.55 × 7,346.10
  4. Step 4: Simplify right side
    21,195.70x = 233,558,597.66
  5. Step 5: Solve for x
    x = 233,558,597.66/21,195.70
  6. Step 6: Final answer
    x = 11,019.15

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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.