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Finding the Fourth Proportional to 9,953.85, 13,663.01 and 8,809.86

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Solution

The fourth proportional to 9,953.85, 13,663.01 and 8,809.86 is: 12,092.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,953.85 : 13,663.01 = 8,809.86 : x
  2. Step 2: Convert to fraction form
    9,953.85/13,663.01 = 8,809.86/x
  3. Step 3: Cross multiply
    9,953.85x = 13,663.01 × 8,809.86
  4. Step 4: Simplify right side
    9,953.85x = 120,369,161.23
  5. Step 5: Solve for x
    x = 120,369,161.23/9,953.85
  6. Step 6: Final answer
    x = 12,092.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.