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Finding the Fourth Proportional to 13,347.86, 19,992.63 and 6,762.74

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Solution

The fourth proportional to 13,347.86, 19,992.63 and 6,762.74 is: 10,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.86 : 19,992.63 = 6,762.74 : x
  2. Step 2: Convert to fraction form
    13,347.86/19,992.63 = 6,762.74/x
  3. Step 3: Cross multiply
    13,347.86x = 19,992.63 × 6,762.74
  4. Step 4: Simplify right side
    13,347.86x = 135,204,958.61
  5. Step 5: Solve for x
    x = 135,204,958.61/13,347.86
  6. Step 6: Final answer
    x = 10,129.34

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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.