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Finding the Fourth Proportional to 19,969.96, 29,945.40 and 6,818.80

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Solution

The fourth proportional to 19,969.96, 29,945.40 and 6,818.80 is: 10,224.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.96 : 29,945.40 = 6,818.80 : x
  2. Step 2: Convert to fraction form
    19,969.96/29,945.40 = 6,818.80/x
  3. Step 3: Cross multiply
    19,969.96x = 29,945.40 × 6,818.80
  4. Step 4: Simplify right side
    19,969.96x = 204,191,693.52
  5. Step 5: Solve for x
    x = 204,191,693.52/19,969.96
  6. Step 6: Final answer
    x = 10,224.94

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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.