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Finding the Fourth Proportional to 14,805.12, 20,412.48 and 9,490.56

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Solution

The fourth proportional to 14,805.12, 20,412.48 and 9,490.56 is: 13,085.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,805.12 : 20,412.48 = 9,490.56 : x
  2. Step 2: Convert to fraction form
    14,805.12/20,412.48 = 9,490.56/x
  3. Step 3: Cross multiply
    14,805.12x = 20,412.48 × 9,490.56
  4. Step 4: Simplify right side
    14,805.12x = 193,725,866.19
  5. Step 5: Solve for x
    x = 193,725,866.19/14,805.12
  6. Step 6: Final answer
    x = 13,085.06

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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.