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Finding the Fourth Proportional to 10,558.19, 15,805.74 and 6,385.58

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Solution

The fourth proportional to 10,558.19, 15,805.74 and 6,385.58 is: 9,559.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,558.19 : 15,805.74 = 6,385.58 : x
  2. Step 2: Convert to fraction form
    10,558.19/15,805.74 = 6,385.58/x
  3. Step 3: Cross multiply
    10,558.19x = 15,805.74 × 6,385.58
  4. Step 4: Simplify right side
    10,558.19x = 100,928,773.53
  5. Step 5: Solve for x
    x = 100,928,773.53/10,558.19
  6. Step 6: Final answer
    x = 9,559.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.