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Finding the Fourth Proportional to 12,901.64, 17,808.03 and 8,426.06

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Solution

The fourth proportional to 12,901.64, 17,808.03 and 8,426.06 is: 11,630.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.64 : 17,808.03 = 8,426.06 : x
  2. Step 2: Convert to fraction form
    12,901.64/17,808.03 = 8,426.06/x
  3. Step 3: Cross multiply
    12,901.64x = 17,808.03 × 8,426.06
  4. Step 4: Simplify right side
    12,901.64x = 150,051,440.22
  5. Step 5: Solve for x
    x = 150,051,440.22/12,901.64
  6. Step 6: Final answer
    x = 11,630.42

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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.