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Finding the Fourth Proportional to 15,887.82, 21,925.08 and 8,814.24

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Solution

The fourth proportional to 15,887.82, 21,925.08 and 8,814.24 is: 12,163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.82 : 21,925.08 = 8,814.24 : x
  2. Step 2: Convert to fraction form
    15,887.82/21,925.08 = 8,814.24/x
  3. Step 3: Cross multiply
    15,887.82x = 21,925.08 × 8,814.24
  4. Step 4: Simplify right side
    15,887.82x = 193,252,917.14
  5. Step 5: Solve for x
    x = 193,252,917.14/15,887.82
  6. Step 6: Final answer
    x = 12,163.59

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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.