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Finding the Fourth Proportional to 14,858.16, 20,499.39 and 8,889

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Solution

The fourth proportional to 14,858.16, 20,499.39 and 8,889 is: 12,263.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,858.16 : 20,499.39 = 8,889 : x
  2. Step 2: Convert to fraction form
    14,858.16/20,499.39 = 8,889/x
  3. Step 3: Cross multiply
    14,858.16x = 20,499.39 × 8,889
  4. Step 4: Simplify right side
    14,858.16x = 182,219,077.71
  5. Step 5: Solve for x
    x = 182,219,077.71/14,858.16
  6. Step 6: Final answer
    x = 12,263.91

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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.