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Finding the Fourth Proportional to 13,923.60, 20,893.08 and 13,810.60

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Solution

The fourth proportional to 13,923.60, 20,893.08 and 13,810.60 is: 20,723.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.60 : 20,893.08 = 13,810.60 : x
  2. Step 2: Convert to fraction form
    13,923.60/20,893.08 = 13,810.60/x
  3. Step 3: Cross multiply
    13,923.60x = 20,893.08 × 13,810.60
  4. Step 4: Simplify right side
    13,923.60x = 288,545,970.65
  5. Step 5: Solve for x
    x = 288,545,970.65/13,923.60
  6. Step 6: Final answer
    x = 20,723.52

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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.