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Finding the Fourth Proportional to 13,395.60, 20,095.92 and 5,390.98

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Solution

The fourth proportional to 13,395.60, 20,095.92 and 5,390.98 is: 8,087.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.60 : 20,095.92 = 5,390.98 : x
  2. Step 2: Convert to fraction form
    13,395.60/20,095.92 = 5,390.98/x
  3. Step 3: Cross multiply
    13,395.60x = 20,095.92 × 5,390.98
  4. Step 4: Simplify right side
    13,395.60x = 108,336,702.80
  5. Step 5: Solve for x
    x = 108,336,702.80/13,395.60
  6. Step 6: Final answer
    x = 8,087.48

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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.