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Finding the Fourth Proportional to 14,749.99, 20,355.01 and 8,781.86

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Solution

The fourth proportional to 14,749.99, 20,355.01 and 8,781.86 is: 12,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,749.99 : 20,355.01 = 8,781.86 : x
  2. Step 2: Convert to fraction form
    14,749.99/20,355.01 = 8,781.86/x
  3. Step 3: Cross multiply
    14,749.99x = 20,355.01 × 8,781.86
  4. Step 4: Simplify right side
    14,749.99x = 178,754,877.05
  5. Step 5: Solve for x
    x = 178,754,877.05/14,749.99
  6. Step 6: Final answer
    x = 12,118.98

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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.