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Finding the Fourth Proportional to 14,630.92, 21,920.46 and 9,991.24

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Solution

The fourth proportional to 14,630.92, 21,920.46 and 9,991.24 is: 14,969.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,630.92 : 21,920.46 = 9,991.24 : x
  2. Step 2: Convert to fraction form
    14,630.92/21,920.46 = 9,991.24/x
  3. Step 3: Cross multiply
    14,630.92x = 21,920.46 × 9,991.24
  4. Step 4: Simplify right side
    14,630.92x = 219,012,576.77
  5. Step 5: Solve for x
    x = 219,012,576.77/14,630.92
  6. Step 6: Final answer
    x = 14,969.16

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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.