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Finding the Fourth Proportional to 12,491.64, 17,237.88 and 6,826.68

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Solution

The fourth proportional to 12,491.64, 17,237.88 and 6,826.68 is: 9,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.64 : 17,237.88 = 6,826.68 : x
  2. Step 2: Convert to fraction form
    12,491.64/17,237.88 = 6,826.68/x
  3. Step 3: Cross multiply
    12,491.64x = 17,237.88 × 6,826.68
  4. Step 4: Simplify right side
    12,491.64x = 117,677,490.64
  5. Step 5: Solve for x
    x = 117,677,490.64/12,491.64
  6. Step 6: Final answer
    x = 9,420.50

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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.