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Finding the Fourth Proportional to 14,549.45, 21,821.09 and 6,649.72

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Solution

The fourth proportional to 14,549.45, 21,821.09 and 6,649.72 is: 9,973.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,549.45 : 21,821.09 = 6,649.72 : x
  2. Step 2: Convert to fraction form
    14,549.45/21,821.09 = 6,649.72/x
  3. Step 3: Cross multiply
    14,549.45x = 21,821.09 × 6,649.72
  4. Step 4: Simplify right side
    14,549.45x = 145,104,138.59
  5. Step 5: Solve for x
    x = 145,104,138.59/14,549.45
  6. Step 6: Final answer
    x = 9,973.17

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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.