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Finding the Fourth Proportional to 14,679.21, 20,260.92 and 9,015.31

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Solution

The fourth proportional to 14,679.21, 20,260.92 and 9,015.31 is: 12,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.21 : 20,260.92 = 9,015.31 : x
  2. Step 2: Convert to fraction form
    14,679.21/20,260.92 = 9,015.31/x
  3. Step 3: Cross multiply
    14,679.21x = 20,260.92 × 9,015.31
  4. Step 4: Simplify right side
    14,679.21x = 182,658,474.69
  5. Step 5: Solve for x
    x = 182,658,474.69/14,679.21
  6. Step 6: Final answer
    x = 12,443.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.