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Finding the Fourth Proportional to 14,472.90, 19,971.90 and 8,185.14

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Solution

The fourth proportional to 14,472.90, 19,971.90 and 8,185.14 is: 11,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,472.90 : 19,971.90 = 8,185.14 : x
  2. Step 2: Convert to fraction form
    14,472.90/19,971.90 = 8,185.14/x
  3. Step 3: Cross multiply
    14,472.90x = 19,971.90 × 8,185.14
  4. Step 4: Simplify right side
    14,472.90x = 163,472,797.57
  5. Step 5: Solve for x
    x = 163,472,797.57/14,472.90
  6. Step 6: Final answer
    x = 11,295.10

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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.