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Finding the Fourth Proportional to 13,323.92, 19,983.88 and 8,378.48

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Solution

The fourth proportional to 13,323.92, 19,983.88 and 8,378.48 is: 12,566.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.92 : 19,983.88 = 8,378.48 : x
  2. Step 2: Convert to fraction form
    13,323.92/19,983.88 = 8,378.48/x
  3. Step 3: Cross multiply
    13,323.92x = 19,983.88 × 8,378.48
  4. Step 4: Simplify right side
    13,323.92x = 167,434,538.90
  5. Step 5: Solve for x
    x = 167,434,538.90/13,323.92
  6. Step 6: Final answer
    x = 12,566.46

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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.