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Finding the Fourth Proportional to 14,402.34, 19,878.93 and 9,379.08

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Solution

The fourth proportional to 14,402.34, 19,878.93 and 9,379.08 is: 12,945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,402.34 : 19,878.93 = 9,379.08 : x
  2. Step 2: Convert to fraction form
    14,402.34/19,878.93 = 9,379.08/x
  3. Step 3: Cross multiply
    14,402.34x = 19,878.93 × 9,379.08
  4. Step 4: Simplify right side
    14,402.34x = 186,446,074.78
  5. Step 5: Solve for x
    x = 186,446,074.78/14,402.34
  6. Step 6: Final answer
    x = 12,945.54

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