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Finding the Fourth Proportional to 14,671.80, 21,968.82 and 8,820.36

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Solution

The fourth proportional to 14,671.80, 21,968.82 and 8,820.36 is: 13,207.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.80 : 21,968.82 = 8,820.36 : x
  2. Step 2: Convert to fraction form
    14,671.80/21,968.82 = 8,820.36/x
  3. Step 3: Cross multiply
    14,671.80x = 21,968.82 × 8,820.36
  4. Step 4: Simplify right side
    14,671.80x = 193,772,901.18
  5. Step 5: Solve for x
    x = 193,772,901.18/14,671.80
  6. Step 6: Final answer
    x = 13,207.17

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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.