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Finding the Fourth Proportional to 13,340.34, 20,003.94 and 7,795.08

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Solution

The fourth proportional to 13,340.34, 20,003.94 and 7,795.08 is: 11,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.34 : 20,003.94 = 7,795.08 : x
  2. Step 2: Convert to fraction form
    13,340.34/20,003.94 = 7,795.08/x
  3. Step 3: Cross multiply
    13,340.34x = 20,003.94 × 7,795.08
  4. Step 4: Simplify right side
    13,340.34x = 155,932,312.62
  5. Step 5: Solve for x
    x = 155,932,312.62/13,340.34
  6. Step 6: Final answer
    x = 11,688.78

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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.