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Finding the Fourth Proportional to 14,279.22, 21,414.51 and 4,917.60

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Solution

The fourth proportional to 14,279.22, 21,414.51 and 4,917.60 is: 7,374.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.22 : 21,414.51 = 4,917.60 : x
  2. Step 2: Convert to fraction form
    14,279.22/21,414.51 = 4,917.60/x
  3. Step 3: Cross multiply
    14,279.22x = 21,414.51 × 4,917.60
  4. Step 4: Simplify right side
    14,279.22x = 105,307,994.38
  5. Step 5: Solve for x
    x = 105,307,994.38/14,279.22
  6. Step 6: Final answer
    x = 7,374.91

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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.