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Finding the Fourth Proportional to 14,068.32, 19,414 and 7,780.56

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Solution

The fourth proportional to 14,068.32, 19,414 and 7,780.56 is: 10,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,068.32 : 19,414 = 7,780.56 : x
  2. Step 2: Convert to fraction form
    14,068.32/19,414 = 7,780.56/x
  3. Step 3: Cross multiply
    14,068.32x = 19,414 × 7,780.56
  4. Step 4: Simplify right side
    14,068.32x = 151,051,791.84
  5. Step 5: Solve for x
    x = 151,051,791.84/14,068.32
  6. Step 6: Final answer
    x = 10,737.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.