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Finding the Fourth Proportional to 9,936.61, 14,899.65 and 8,813.95

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Solution

The fourth proportional to 9,936.61, 14,899.65 and 8,813.95 is: 13,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,936.61 : 14,899.65 = 8,813.95 : x
  2. Step 2: Convert to fraction form
    9,936.61/14,899.65 = 8,813.95/x
  3. Step 3: Cross multiply
    9,936.61x = 14,899.65 × 8,813.95
  4. Step 4: Simplify right side
    9,936.61x = 131,324,699.82
  5. Step 5: Solve for x
    x = 131,324,699.82/9,936.61
  6. Step 6: Final answer
    x = 13,216.25

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1.5x scale

Why These Related Problems?

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