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Finding the Fourth Proportional to 9,895.55, 13,665.11 and 6,364.89

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Solution

The fourth proportional to 9,895.55, 13,665.11 and 6,364.89 is: 8,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,895.55 : 13,665.11 = 6,364.89 : x
  2. Step 2: Convert to fraction form
    9,895.55/13,665.11 = 6,364.89/x
  3. Step 3: Cross multiply
    9,895.55x = 13,665.11 × 6,364.89
  4. Step 4: Simplify right side
    9,895.55x = 86,976,921.99
  5. Step 5: Solve for x
    x = 86,976,921.99/9,895.55
  6. Step 6: Final answer
    x = 8,789.50

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1.5x scale

Why These Related Problems?

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