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Finding the Fourth Proportional to 13,958.60, 20,945.12 and 9,281.93

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Solution

The fourth proportional to 13,958.60, 20,945.12 and 9,281.93 is: 13,927.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.60 : 20,945.12 = 9,281.93 : x
  2. Step 2: Convert to fraction form
    13,958.60/20,945.12 = 9,281.93/x
  3. Step 3: Cross multiply
    13,958.60x = 20,945.12 × 9,281.93
  4. Step 4: Simplify right side
    13,958.60x = 194,410,986.55
  5. Step 5: Solve for x
    x = 194,410,986.55/13,958.60
  6. Step 6: Final answer
    x = 13,927.69

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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.