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Finding the Fourth Proportional to 14,187.16, 21,278.58 and 4,951

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Solution

The fourth proportional to 14,187.16, 21,278.58 and 4,951 is: 7,425.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.16 : 21,278.58 = 4,951 : x
  2. Step 2: Convert to fraction form
    14,187.16/21,278.58 = 4,951/x
  3. Step 3: Cross multiply
    14,187.16x = 21,278.58 × 4,951
  4. Step 4: Simplify right side
    14,187.16x = 105,350,249.58
  5. Step 5: Solve for x
    x = 105,350,249.58/14,187.16
  6. Step 6: Final answer
    x = 7,425.75

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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.