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Finding the Fourth Proportional to 12,289.52, 16,950.39 and 9,631.64

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Solution

The fourth proportional to 12,289.52, 16,950.39 and 9,631.64 is: 13,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.52 : 16,950.39 = 9,631.64 : x
  2. Step 2: Convert to fraction form
    12,289.52/16,950.39 = 9,631.64/x
  3. Step 3: Cross multiply
    12,289.52x = 16,950.39 × 9,631.64
  4. Step 4: Simplify right side
    12,289.52x = 163,260,054.34
  5. Step 5: Solve for x
    x = 163,260,054.34/12,289.52
  6. Step 6: Final answer
    x = 13,284.49

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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.