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Finding the Fourth Proportional to 14,671.56, 21,993.93 and 7,643.28

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Solution

The fourth proportional to 14,671.56, 21,993.93 and 7,643.28 is: 11,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.56 : 21,993.93 = 7,643.28 : x
  2. Step 2: Convert to fraction form
    14,671.56/21,993.93 = 7,643.28/x
  3. Step 3: Cross multiply
    14,671.56x = 21,993.93 × 7,643.28
  4. Step 4: Simplify right side
    14,671.56x = 168,105,765.29
  5. Step 5: Solve for x
    x = 168,105,765.29/14,671.56
  6. Step 6: Final answer
    x = 11,457.93

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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.