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Finding the Fourth Proportional to 13,343.55, 20,008.79 and 7,798.29

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Solution

The fourth proportional to 13,343.55, 20,008.79 and 7,798.29 is: 11,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.55 : 20,008.79 = 7,798.29 : x
  2. Step 2: Convert to fraction form
    13,343.55/20,008.79 = 7,798.29/x
  3. Step 3: Cross multiply
    13,343.55x = 20,008.79 × 7,798.29
  4. Step 4: Simplify right side
    13,343.55x = 156,034,262.19
  5. Step 5: Solve for x
    x = 156,034,262.19/13,343.55
  6. Step 6: Final answer
    x = 11,693.61

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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.