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Finding the Fourth Proportional to 14,772.34, 20,388 and 8,807.50

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Solution

The fourth proportional to 14,772.34, 20,388 and 8,807.50 is: 12,155.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.34 : 20,388 = 8,807.50 : x
  2. Step 2: Convert to fraction form
    14,772.34/20,388 = 8,807.50/x
  3. Step 3: Cross multiply
    14,772.34x = 20,388 × 8,807.50
  4. Step 4: Simplify right side
    14,772.34x = 179,567,310
  5. Step 5: Solve for x
    x = 179,567,310/14,772.34
  6. Step 6: Final answer
    x = 12,155.64

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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.