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Finding the Fourth Proportional to 20,243.23, 30,368.42 and 6,913.10

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Solution

The fourth proportional to 20,243.23, 30,368.42 and 6,913.10 is: 10,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.23 : 30,368.42 = 6,913.10 : x
  2. Step 2: Convert to fraction form
    20,243.23/30,368.42 = 6,913.10/x
  3. Step 3: Cross multiply
    20,243.23x = 30,368.42 × 6,913.10
  4. Step 4: Simplify right side
    20,243.23x = 209,939,965.66
  5. Step 5: Solve for x
    x = 209,939,965.66/20,243.23
  6. Step 6: Final answer
    x = 10,370.87

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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.